Finding the Fourth Proportional to 2,055.28, 2,836.32 and 1,123.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.28 : 2,836.32 = 1,123.78 : x
2. Step 2: Convert to fraction form
   2,055.28/2,836.32 = 1,123.78/x
3. Step 3: Cross multiply
   2,055.28x = 2,836.32 × 1,123.78
4. Step 4: Simplify right side
   2,055.28x = 3,187,399.69
5. Step 5: Solve for x
   x = 3,187,399.69/2,055.28
6. Step 6: Final answer
   x = 1,550.83