Finding the Fourth Proportional to 2,340.55, 3,229.72 and 1,292.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,340.55 : 3,229.72 = 1,292.55 : x
2. Step 2: Convert to fraction form
   2,340.55/3,229.72 = 1,292.55/x
3. Step 3: Cross multiply
   2,340.55x = 3,229.72 × 1,292.55
4. Step 4: Simplify right side
   2,340.55x = 4,174,574.59
5. Step 5: Solve for x
   x = 4,174,574.59/2,340.55
6. Step 6: Final answer
   x = 1,783.59