Finding the Fourth Proportional to 2,168.46, 2,992.56 and 1,224.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.46 : 2,992.56 = 1,224.45 : x
2. Step 2: Convert to fraction form
   2,168.46/2,992.56 = 1,224.45/x
3. Step 3: Cross multiply
   2,168.46x = 2,992.56 × 1,224.45
4. Step 4: Simplify right side
   2,168.46x = 3,664,240.09
5. Step 5: Solve for x
   x = 3,664,240.09/2,168.46
6. Step 6: Final answer
   x = 1,689.79