Finding the Fourth Proportional to 2,124.28, 2,931.48 and 1,192.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.28 : 2,931.48 = 1,192.72 : x
2. Step 2: Convert to fraction form
   2,124.28/2,931.48 = 1,192.72/x
3. Step 3: Cross multiply
   2,124.28x = 2,931.48 × 1,192.72
4. Step 4: Simplify right side
   2,124.28x = 3,496,434.83
5. Step 5: Solve for x
   x = 3,496,434.83/2,124.28
6. Step 6: Final answer
   x = 1,645.94