Finding the Fourth Proportional to 2,540.31, 3,811.10 and 1,224.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.31 : 3,811.10 = 1,224.15 : x
2. Step 2: Convert to fraction form
   2,540.31/3,811.10 = 1,224.15/x
3. Step 3: Cross multiply
   2,540.31x = 3,811.10 × 1,224.15
4. Step 4: Simplify right side
   2,540.31x = 4,665,351.94
5. Step 5: Solve for x
   x = 4,665,351.94/2,540.31
6. Step 6: Final answer
   x = 1,836.53