Finding the Fourth Proportional to 2,112.62, 3,168.32 and 1,124.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.62 : 3,168.32 = 1,124.15 : x
2. Step 2: Convert to fraction form
   2,112.62/3,168.32 = 1,124.15/x
3. Step 3: Cross multiply
   2,112.62x = 3,168.32 × 1,124.15
4. Step 4: Simplify right side
   2,112.62x = 3,561,645.47
5. Step 5: Solve for x
   x = 3,561,645.47/2,112.62
6. Step 6: Final answer
   x = 1,685.89