Finding the Fourth Proportional to 1,039.35, 1,434.32 and 567.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.35 : 1,434.32 = 567.25 : x
2. Step 2: Convert to fraction form
   1,039.35/1,434.32 = 567.25/x
3. Step 3: Cross multiply
   1,039.35x = 1,434.32 × 567.25
4. Step 4: Simplify right side
   1,039.35x = 813,618.02
5. Step 5: Solve for x
   x = 813,618.02/1,039.35
6. Step 6: Final answer
   x = 782.81