Finding the Fourth Proportional to 2,254.48, 3,115.50 and 1,811.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,254.48 : 3,115.50 = 1,811.61 : x
2. Step 2: Convert to fraction form
   2,254.48/3,115.50 = 1,811.61/x
3. Step 3: Cross multiply
   2,254.48x = 3,115.50 × 1,811.61
4. Step 4: Simplify right side
   2,254.48x = 5,644,064.16
5. Step 5: Solve for x
   x = 5,644,064.16/2,254.48
6. Step 6: Final answer
   x = 2,503.49