Finding the Fourth Proportional to 2,623.55, 3,930.26 and 2,490.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,623.55 : 3,930.26 = 2,490.71 : x
2. Step 2: Convert to fraction form
   2,623.55/3,930.26 = 2,490.71/x
3. Step 3: Cross multiply
   2,623.55x = 3,930.26 × 2,490.71
4. Step 4: Simplify right side
   2,623.55x = 9,789,105.78
5. Step 5: Solve for x
   x = 9,789,105.78/2,623.55
6. Step 6: Final answer
   x = 3,731.25