Finding the Fourth Proportional to 1,002.91, 1,384.03 and 560.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.91 : 1,384.03 = 560.86 : x
2. Step 2: Convert to fraction form
   1,002.91/1,384.03 = 560.86/x
3. Step 3: Cross multiply
   1,002.91x = 1,384.03 × 560.86
4. Step 4: Simplify right side
   1,002.91x = 776,238.74
5. Step 5: Solve for x
   x = 776,238.74/1,002.91
6. Step 6: Final answer
   x = 773.99