Finding the Fourth Proportional to 3,357.55, 5,038.05 and 2,540.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,357.55 : 5,038.05 = 2,540.83 : x
2. Step 2: Convert to fraction form
   3,357.55/5,038.05 = 2,540.83/x
3. Step 3: Cross multiply
   3,357.55x = 5,038.05 × 2,540.83
4. Step 4: Simplify right side
   3,357.55x = 12,800,828.58
5. Step 5: Solve for x
   x = 12,800,828.58/3,357.55
6. Step 6: Final answer
   x = 3,812.55