Answer: Wes made 1.2 liters of fruit punch .
Explanation:
Let x be the total capacity ( in milliliters) of the punch bowl.
As per given,
Amount of orange juice =

Amount of grape juice = half of remaining space

After filling the rest of the punch bowl with 300 mL of cherry juice, we have

Thus , Wes made 1200 milliliters.
Since , 1 liters = 1000 milliliters
Then , 1200 milliliters = 1.2 liters
Hence, Wes made 1.2 liters of fruit punch .