Finding the Fourth Proportional to 3,925.60, 5,414.52 and 2,528.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,925.60 : 5,414.52 = 2,528.08 : x
2. Step 2: Convert to fraction form
   3,925.60/5,414.52 = 2,528.08/x
3. Step 3: Cross multiply
   3,925.60x = 5,414.52 × 2,528.08
4. Step 4: Simplify right side
   3,925.60x = 13,688,339.72
5. Step 5: Solve for x
   x = 13,688,339.72/3,925.60
6. Step 6: Final answer
   x = 3,486.94