Finding the Fourth Proportional to 2,659.52, 3,961.98 and 2,539.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.52 : 3,961.98 = 2,539.57 : x
2. Step 2: Convert to fraction form
   2,659.52/3,961.98 = 2,539.57/x
3. Step 3: Cross multiply
   2,659.52x = 3,961.98 × 2,539.57
4. Step 4: Simplify right side
   2,659.52x = 10,061,725.55
5. Step 5: Solve for x
   x = 10,061,725.55/2,659.52
6. Step 6: Final answer
   x = 3,783.29