Finding the Fourth Proportional to 2,517.24, 3,473.80 and 1,398.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,517.24 : 3,473.80 = 1,398.10 : x
2. Step 2: Convert to fraction form
   2,517.24/3,473.80 = 1,398.10/x
3. Step 3: Cross multiply
   2,517.24x = 3,473.80 × 1,398.10
4. Step 4: Simplify right side
   2,517.24x = 4,856,719.78
5. Step 5: Solve for x
   x = 4,856,719.78/2,517.24
6. Step 6: Final answer
   x = 1,929.38