Finding the Fourth Proportional to 1,039.57, 1,434.61 and 567.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.57 : 1,434.61 = 567.47 : x
2. Step 2: Convert to fraction form
   1,039.57/1,434.61 = 567.47/x
3. Step 3: Cross multiply
   1,039.57x = 1,434.61 × 567.47
4. Step 4: Simplify right side
   1,039.57x = 814,090.96
5. Step 5: Solve for x
   x = 814,090.96/1,039.57
6. Step 6: Final answer
   x = 783.11