Finding the Fourth Proportional to 3,155.80, 4,358.43 and 2,456.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,155.80 : 4,358.43 = 2,456.05 : x
2. Step 2: Convert to fraction form
   3,155.80/4,358.43 = 2,456.05/x
3. Step 3: Cross multiply
   3,155.80x = 4,358.43 × 2,456.05
4. Step 4: Simplify right side
   3,155.80x = 10,704,522.00
5. Step 5: Solve for x
   x = 10,704,522.00/3,155.80
6. Step 6: Final answer
   x = 3,392.02