Finding the Fourth Proportional to 2,254.59, 3,111.35 and 1,259.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,254.59 : 3,111.35 = 1,259.91 : x
2. Step 2: Convert to fraction form
   2,254.59/3,111.35 = 1,259.91/x
3. Step 3: Cross multiply
   2,254.59x = 3,111.35 × 1,259.91
4. Step 4: Simplify right side
   2,254.59x = 3,920,014.68
5. Step 5: Solve for x
   x = 3,920,014.68/2,254.59
6. Step 6: Final answer
   x = 1,738.68