Finding the Fourth Proportional to 2,067.80, 2,853.57 and 1,123.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.80 : 2,853.57 = 1,123.59 : x
2. Step 2: Convert to fraction form
   2,067.80/2,853.57 = 1,123.59/x
3. Step 3: Cross multiply
   2,067.80x = 2,853.57 × 1,123.59
4. Step 4: Simplify right side
   2,067.80x = 3,206,242.72
5. Step 5: Solve for x
   x = 3,206,242.72/2,067.80
6. Step 6: Final answer
   x = 1,550.56