Finding the Fourth Proportional to 1,038.29, 1,432.71 and 707.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,038.29 : 1,432.71 = 707.15 : x
2. Step 2: Convert to fraction form
   1,038.29/1,432.71 = 707.15/x
3. Step 3: Cross multiply
   1,038.29x = 1,432.71 × 707.15
4. Step 4: Simplify right side
   1,038.29x = 1,013,140.88
5. Step 5: Solve for x
   x = 1,013,140.88/1,038.29
6. Step 6: Final answer
   x = 975.78