Finding the Fourth Proportional to 2,168.43, 2,992.38 and 1,224.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.43 : 2,992.38 = 1,224.06 : x
2. Step 2: Convert to fraction form
   2,168.43/2,992.38 = 1,224.06/x
3. Step 3: Cross multiply
   2,168.43x = 2,992.38 × 1,224.06
4. Step 4: Simplify right side
   2,168.43x = 3,662,852.66
5. Step 5: Solve for x
   x = 3,662,852.66/2,168.43
6. Step 6: Final answer
   x = 1,689.17