Finding the Fourth Proportional to 2,168.32, 2,992.32 and 1,224.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.32 : 2,992.32 = 1,224.30 : x
2. Step 2: Convert to fraction form
   2,168.32/2,992.32 = 1,224.30/x
3. Step 3: Cross multiply
   2,168.32x = 2,992.32 × 1,224.30
4. Step 4: Simplify right side
   2,168.32x = 3,663,497.38
5. Step 5: Solve for x
   x = 3,663,497.38/2,168.32
6. Step 6: Final answer
   x = 1,689.56