predictive measure

i guys,

I have a MTD measure for Revenue. 

I would like to have a measure  to predict what would be the closing month Revenue, based on the the current revenue. 

I know the logic would be MTD_Revenue / past number of current month trading days * by remaining trading days of current month. 

I know it would invlove using the Calaendar, which happenes that I have a good one. 

Note: I would like to use [Is TradingDay" as a filter, so only actual trading days are counted. 

I appreciate your help in advance.

Majd