Finding the Fourth Proportional to 1,304.96, 1,800.82 and 715.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,304.96 : 1,800.82 = 715.50 : x
2. Step 2: Convert to fraction form
   1,304.96/1,800.82 = 715.50/x
3. Step 3: Cross multiply
   1,304.96x = 1,800.82 × 715.50
4. Step 4: Simplify right side
   1,304.96x = 1,288,486.71
5. Step 5: Solve for x
   x = 1,288,486.71/1,304.96
6. Step 6: Final answer
   x = 987.38