Finding the Fourth Proportional to 1,031.85, 1,423.89 and 566.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,031.85 : 1,423.89 = 566.10 : x
2. Step 2: Convert to fraction form
   1,031.85/1,423.89 = 566.10/x
3. Step 3: Cross multiply
   1,031.85x = 1,423.89 × 566.10
4. Step 4: Simplify right side
   1,031.85x = 806,064.13
5. Step 5: Solve for x
   x = 806,064.13/1,031.85
6. Step 6: Final answer
   x = 781.18