Finding the Fourth Proportional to 2,456.84, 3,685.35 and 725.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.84 : 3,685.35 = 725.60 : x
2. Step 2: Convert to fraction form
   2,456.84/3,685.35 = 725.60/x
3. Step 3: Cross multiply
   2,456.84x = 3,685.35 × 725.60
4. Step 4: Simplify right side
   2,456.84x = 2,674,089.96
5. Step 5: Solve for x
   x = 2,674,089.96/2,456.84
6. Step 6: Final answer
   x = 1,088.43