Finding the Fourth Proportional to 2,517.30, 3,473.87 and 1,398.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,517.30 : 3,473.87 = 1,398.21 : x
2. Step 2: Convert to fraction form
   2,517.30/3,473.87 = 1,398.21/x
3. Step 3: Cross multiply
   2,517.30x = 3,473.87 × 1,398.21
4. Step 4: Simplify right side
   2,517.30x = 4,857,192.78
5. Step 5: Solve for x
   x = 4,857,192.78/2,517.30
6. Step 6: Final answer
   x = 1,929.52