Finding the Fourth Proportional to 2,254.91, 3,111.57 and 1,260.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,254.91 : 3,111.57 = 1,260.05 : x
2. Step 2: Convert to fraction form
   2,254.91/3,111.57 = 1,260.05/x
3. Step 3: Cross multiply
   2,254.91x = 3,111.57 × 1,260.05
4. Step 4: Simplify right side
   2,254.91x = 3,920,733.78
5. Step 5: Solve for x
   x = 3,920,733.78/2,254.91
6. Step 6: Final answer
   x = 1,738.75