Finding the Fourth Proportional to 1,039.54, 1,434.55 and 567.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.54 : 1,434.55 = 567.42 : x
2. Step 2: Convert to fraction form
   1,039.54/1,434.55 = 567.42/x
3. Step 3: Cross multiply
   1,039.54x = 1,434.55 × 567.42
4. Step 4: Simplify right side
   1,039.54x = 813,992.36
5. Step 5: Solve for x
   x = 813,992.36/1,039.54
6. Step 6: Final answer
   x = 783.03