Finding the Fourth Proportional to 2,456.70, 3,685.59 and 725.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.70 : 3,685.59 = 725.28 : x
2. Step 2: Convert to fraction form
   2,456.70/3,685.59 = 725.28/x
3. Step 3: Cross multiply
   2,456.70x = 3,685.59 × 725.28
4. Step 4: Simplify right side
   2,456.70x = 2,673,084.72
5. Step 5: Solve for x
   x = 2,673,084.72/2,456.70
6. Step 6: Final answer
   x = 1,088.08