Finding the Fourth Proportional to 1,008.45, 1,391.54 and 566.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.45 : 1,391.54 = 566.37 : x
2. Step 2: Convert to fraction form
   1,008.45/1,391.54 = 566.37/x
3. Step 3: Cross multiply
   1,008.45x = 1,391.54 × 566.37
4. Step 4: Simplify right side
   1,008.45x = 788,123.68
5. Step 5: Solve for x
   x = 788,123.68/1,008.45
6. Step 6: Final answer
   x = 781.52