Finding the Fourth Proportional to 3,100.79, 4,274.55 and 2,540.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.79 : 4,274.55 = 2,540.37 : x
2. Step 2: Convert to fraction form
   3,100.79/4,274.55 = 2,540.37/x
3. Step 3: Cross multiply
   3,100.79x = 4,274.55 × 2,540.37
4. Step 4: Simplify right side
   3,100.79x = 10,858,954.61
5. Step 5: Solve for x
   x = 10,858,954.61/3,100.79
6. Step 6: Final answer
   x = 3,501.99