The part of the sentence "ensure a proper" is correct and can be used in written English.
You can use it when you want to ensure something is properly done or properly followed. For example, "We must ensure a proper safety protocol is followed at the construction site."
Russia will do everything within its power to ensure a proper comprehensive and transparent investigation.
The E.P.A. and the city's own environmental agency should determine the scope of the problem and ensure a proper cleanup.
Labor's employment spokesman, Brendan O'Connor, said an inquiry was needed "to ensure a proper total ban on asbestos is enforced".
Drawing on our experience, the Carter Center and other international monitors can help to ensure a proper electoral process.
It also cites Mr. Tenet as saying he "should have involved himself more forcefully to ensure a proper resolution of this matter".
Mr. Giuliani said he owed it to those who perished to ensure a proper memorial at the World Trade Center site and promised to make it his mission.
L. Britt Snider, who became the C.I.A.'s inspector general in 1998, concluded in his 1999 report that Mr. Tenet "should have involved himself more forcefully to ensure a proper resolution of this matter".
The report also rebuked Mr. Deutch's successor as director of central intelligence, George J. Tenet, saying he "should have involved himself more forcefully to ensure a proper resolution of the matter".
PetroSaudi, he said, had already seen the benefit as "the man in charge of China's economic policy is now supportive of working with PetroSaudi, and … he has spoken with CNPC [China National Petroleum Corporation] to ensure a proper working dialogue".
He said the faster Isis was degraded, the safer western nations would be, but he said the only way to be safe in the longer term was to ensure a proper Syrian government.
Meanwhile, power factor should be adjusted to ensure a proper voltage level of the traction network.
