Finding the Fourth Proportional to 2,456.34, 3,684.60 and 725.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.34 : 3,684.60 = 725.10 : x
2. Step 2: Convert to fraction form
   2,456.34/3,684.60 = 725.10/x
3. Step 3: Cross multiply
   2,456.34x = 3,684.60 × 725.10
4. Step 4: Simplify right side
   2,456.34x = 2,671,703.46
5. Step 5: Solve for x
   x = 2,671,703.46/2,456.34
6. Step 6: Final answer
   x = 1,087.68