Finding the Fourth Proportional to 1,014.43, 1,399.88 and 566.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,014.43 : 1,399.88 = 566.31 : x
2. Step 2: Convert to fraction form
   1,014.43/1,399.88 = 566.31/x
3. Step 3: Cross multiply
   1,014.43x = 1,399.88 × 566.31
4. Step 4: Simplify right side
   1,014.43x = 792,763.21
5. Step 5: Solve for x
   x = 792,763.21/1,014.43
6. Step 6: Final answer
   x = 781.49