Finding the Fourth Proportional to 1,417.91, 2,124.78 and 1,244.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.91 : 2,124.78 = 1,244.15 : x
2. Step 2: Convert to fraction form
   1,417.91/2,124.78 = 1,244.15/x
3. Step 3: Cross multiply
   1,417.91x = 2,124.78 × 1,244.15
4. Step 4: Simplify right side
   1,417.91x = 2,643,545.04
5. Step 5: Solve for x
   x = 2,643,545.04/1,417.91
6. Step 6: Final answer
   x = 1,864.40