Finding the Fourth Proportional to 2,340.28, 3,229.46 and 1,292.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,340.28 : 3,229.46 = 1,292.12 : x
2. Step 2: Convert to fraction form
   2,340.28/3,229.46 = 1,292.12/x
3. Step 3: Cross multiply
   2,340.28x = 3,229.46 × 1,292.12
4. Step 4: Simplify right side
   2,340.28x = 4,172,849.86
5. Step 5: Solve for x
   x = 4,172,849.86/2,340.28
6. Step 6: Final answer
   x = 1,783.06