Finding the Fourth Proportional to 3,103.62, 4,650.56 and 2,639.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,103.62 : 4,650.56 = 2,639.49 : x
2. Step 2: Convert to fraction form
   3,103.62/4,650.56 = 2,639.49/x
3. Step 3: Cross multiply
   3,103.62x = 4,650.56 × 2,639.49
4. Step 4: Simplify right side
   3,103.62x = 12,275,100.72
5. Step 5: Solve for x
   x = 12,275,100.72/3,103.62
6. Step 6: Final answer
   x = 3,955.10