Finding the Fourth Proportional to 2,254.60, 3,111.32 and 1,259.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,254.60 : 3,111.32 = 1,259.85 : x
2. Step 2: Convert to fraction form
   2,254.60/3,111.32 = 1,259.85/x
3. Step 3: Cross multiply
   2,254.60x = 3,111.32 × 1,259.85
4. Step 4: Simplify right side
   2,254.60x = 3,919,796.50
5. Step 5: Solve for x
   x = 3,919,796.50/2,254.60
6. Step 6: Final answer
   x = 1,738.58