Finding the Fourth Proportional to 2,268.88, 3,131.04 and 1,274.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,268.88 : 3,131.04 = 1,274.15 : x
2. Step 2: Convert to fraction form
   2,268.88/3,131.04 = 1,274.15/x
3. Step 3: Cross multiply
   2,268.88x = 3,131.04 × 1,274.15
4. Step 4: Simplify right side
   2,268.88x = 3,989,414.62
5. Step 5: Solve for x
   x = 3,989,414.62/2,268.88
6. Step 6: Final answer
   x = 1,758.32