Finding the Fourth Proportional to 1,039.36, 1,434.31 and 567.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.36 : 1,434.31 = 567.27 : x
2. Step 2: Convert to fraction form
   1,039.36/1,434.31 = 567.27/x
3. Step 3: Cross multiply
   1,039.36x = 1,434.31 × 567.27
4. Step 4: Simplify right side
   1,039.36x = 813,641.03
5. Step 5: Solve for x
   x = 813,641.03/1,039.36
6. Step 6: Final answer
   x = 782.83