Finding the Fourth Proportional to 1,002.41, 1,383.15 and 560.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.41 : 1,383.15 = 560.31 : x
2. Step 2: Convert to fraction form
   1,002.41/1,383.15 = 560.31/x
3. Step 3: Cross multiply
   1,002.41x = 1,383.15 × 560.31
4. Step 4: Simplify right side
   1,002.41x = 774,992.78
5. Step 5: Solve for x
   x = 774,992.78/1,002.41
6. Step 6: Final answer
   x = 773.13