Finding the Fourth Proportional to 1,304.75, 1,800.59 and 715.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,304.75 : 1,800.59 = 715.32 : x
2. Step 2: Convert to fraction form
   1,304.75/1,800.59 = 715.32/x
3. Step 3: Cross multiply
   1,304.75x = 1,800.59 × 715.32
4. Step 4: Simplify right side
   1,304.75x = 1,287,994.46
5. Step 5: Solve for x
   x = 1,287,994.46/1,304.75
6. Step 6: Final answer
   x = 987.16