Return Fields from Most Recent Record

Hi All - I'm really struggling with a seemingly simple GI. I have the POLine table and I want to get the most recent unit cost for each inventory item. For example, in the filtered result below, I would like only show the circled results.

When I group by InventoryID and apply either a aggregate Max on the order date field or a sort by date, I get the most recent date but I don't get the correct unit cost associated with that PO date. Instead, the cost is a sum of all aggregated records.

I can’t use any of the aggregate tools on the unit cost (max, min, avg, etc.) because cost can go up and down - I want the most recent cost. How can I just get the unit cost associated with the most recent record date? Is there any way to do this within a GI? Any help would be greatly appreciate!

Best,

Amit