Finding the Fourth Proportional to 2,739.78, 4,105.98 and 2,280.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,739.78 : 4,105.98 = 2,280.48 : x
2. Step 2: Convert to fraction form
   2,739.78/4,105.98 = 2,280.48/x
3. Step 3: Cross multiply
   2,739.78x = 4,105.98 × 2,280.48
4. Step 4: Simplify right side
   2,739.78x = 9,363,605.27
5. Step 5: Solve for x
   x = 9,363,605.27/2,739.78
6. Step 6: Final answer
   x = 3,417.65