Finding the Fourth Proportional to 2,580.10, 3,871.50 and 2,440.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.10 : 3,871.50 = 2,440.69 : x
2. Step 2: Convert to fraction form
   2,580.10/3,871.50 = 2,440.69/x
3. Step 3: Cross multiply
   2,580.10x = 3,871.50 × 2,440.69
4. Step 4: Simplify right side
   2,580.10x = 9,449,131.34
5. Step 5: Solve for x
   x = 9,449,131.34/2,580.10
6. Step 6: Final answer
   x = 3,662.31