Calculate Inventory Roll Forward to future dates

sprakash1192 , Better  use a date calendar

Total_Inv = 
var _max = maxx(Inventory_Roll,Inventory_Roll[Date])
return
CALCULATE(sum(Inventory_Roll[StockQty]),FILTER(all('Date'),Date[Date] >=_max))

Total_Inv = 
var _max = maxx(Inventory_Roll,Inventory_Roll[Date])
return
CALCULATE(sum(Inventory_Roll[StockQty]),FILTER(all('Date'),Date[Date] =_max))

To get the best of the time intelligence function. Make sure you have a date calendar and it has been marked as the date in model view. Also, join it with the date column of your fact/s. Refer :
https://radacad.com/creating-calendar-table-in-power-bi-using-dax-functions
https://www.archerpoint.com/blog/Posts/creating-date-table-power-bi
https://www.sqlbi.com/articles/creating-a-simple-date-table-in-dax/

See if my webinar on Time Intelligence can help: https://community.powerbi.com/t5/Webinars-and-Video-Gallery/PowerBI-Time-Intelligence-Calendar-WTD-YTD-LYTD-Week-Over-Week/m-p/1051626#M184


Appreciate your Kudos.