Finding the Fourth Proportional to 2,254.55, 3,111.12 and 1,259.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,254.55 : 3,111.12 = 1,259.80 : x
2. Step 2: Convert to fraction form
   2,254.55/3,111.12 = 1,259.80/x
3. Step 3: Cross multiply
   2,254.55x = 3,111.12 × 1,259.80
4. Step 4: Simplify right side
   2,254.55x = 3,919,400.47
5. Step 5: Solve for x
   x = 3,919,400.47/2,254.55
6. Step 6: Final answer
   x = 1,738.44