Finding the Fourth Proportional to 1,285.32, 1,773.64 and 725.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,285.32 : 1,773.64 = 725.71 : x
2. Step 2: Convert to fraction form
   1,285.32/1,773.64 = 725.71/x
3. Step 3: Cross multiply
   1,285.32x = 1,773.64 × 725.71
4. Step 4: Simplify right side
   1,285.32x = 1,287,139.82
5. Step 5: Solve for x
   x = 1,287,139.82/1,285.32
6. Step 6: Final answer
   x = 1,001.42