Finding the Fourth Proportional to 2,254.89, 3,111.66 and 1,260.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,254.89 : 3,111.66 = 1,260.15 : x
2. Step 2: Convert to fraction form
   2,254.89/3,111.66 = 1,260.15/x
3. Step 3: Cross multiply
   2,254.89x = 3,111.66 × 1,260.15
4. Step 4: Simplify right side
   2,254.89x = 3,921,158.35
5. Step 5: Solve for x
   x = 3,921,158.35/2,254.89
6. Step 6: Final answer
   x = 1,738.96