Finding the Fourth Proportional to 2,078.28, 3,113.36 and 1,254.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.28 : 3,113.36 = 1,254.10 : x
2. Step 2: Convert to fraction form
   2,078.28/3,113.36 = 1,254.10/x
3. Step 3: Cross multiply
   2,078.28x = 3,113.36 × 1,254.10
4. Step 4: Simplify right side
   2,078.28x = 3,904,464.78
5. Step 5: Solve for x
   x = 3,904,464.78/2,078.28
6. Step 6: Final answer
   x = 1,878.70