Finding the Fourth Proportional to 3,949.02, 5,449.55 and 2,531.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.02 : 5,449.55 = 2,531.25 : x
2. Step 2: Convert to fraction form
   3,949.02/5,449.55 = 2,531.25/x
3. Step 3: Cross multiply
   3,949.02x = 5,449.55 × 2,531.25
4. Step 4: Simplify right side
   3,949.02x = 13,794,160.78
5. Step 5: Solve for x
   x = 13,794,160.78/3,949.02
6. Step 6: Final answer
   x = 3,493.06