Finding the Fourth Proportional to 1,002.42, 1,383.31 and 560.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.42 : 1,383.31 = 560.32 : x
2. Step 2: Convert to fraction form
   1,002.42/1,383.31 = 560.32/x
3. Step 3: Cross multiply
   1,002.42x = 1,383.31 × 560.32
4. Step 4: Simplify right side
   1,002.42x = 775,090.00
5. Step 5: Solve for x
   x = 775,090.00/1,002.42
6. Step 6: Final answer
   x = 773.22