Finding the Fourth Proportional to 1,008.41, 1,391.60 and 566.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.41 : 1,391.60 = 566.31 : x
2. Step 2: Convert to fraction form
   1,008.41/1,391.60 = 566.31/x
3. Step 3: Cross multiply
   1,008.41x = 1,391.60 × 566.31
4. Step 4: Simplify right side
   1,008.41x = 788,077.00
5. Step 5: Solve for x
   x = 788,077.00/1,008.41
6. Step 6: Final answer
   x = 781.50