To find the total fluid ounces of fruit punch that Dave gets, you can multiply the number of cartons by the fluid ounces in each carton:
\[ \text{Total fluid ounces} = \text{Number of cartons} \times \text{Fluid ounces per carton} \]
Substituting the values:
\[ \text{Total fluid ounces} = 36 \times 9.45 \]
Now calculate:
\[ 36 \times 9.45 = 340.2 \]
Thus, Dave gets a total of 340.2 fluid ounces of fruit punch.