Finding the Fourth Proportional to 1,008.27, 1,391.33 and 566.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.27 : 1,391.33 = 566.09 : x
2. Step 2: Convert to fraction form
   1,008.27/1,391.33 = 566.09/x
3. Step 3: Cross multiply
   1,008.27x = 1,391.33 × 566.09
4. Step 4: Simplify right side
   1,008.27x = 787,608.21
5. Step 5: Solve for x
   x = 787,608.21/1,008.27
6. Step 6: Final answer
   x = 781.15