Finding the Fourth Proportional to 2,108.48, 2,909.25 and 1,224.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.48 : 2,909.25 = 1,224.17 : x
2. Step 2: Convert to fraction form
   2,108.48/2,909.25 = 1,224.17/x
3. Step 3: Cross multiply
   2,108.48x = 2,909.25 × 1,224.17
4. Step 4: Simplify right side
   2,108.48x = 3,561,402.03
5. Step 5: Solve for x
   x = 3,561,402.03/2,108.48
6. Step 6: Final answer
   x = 1,689.09