Finding the Fourth Proportional to 2,178.57, 3,267.37 and 1,067.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178.57 : 3,267.37 = 1,067.55 : x
2. Step 2: Convert to fraction form
   2,178.57/3,267.37 = 1,067.55/x
3. Step 3: Cross multiply
   2,178.57x = 3,267.37 × 1,067.55
4. Step 4: Simplify right side
   2,178.57x = 3,488,069.93
5. Step 5: Solve for x
   x = 3,488,069.93/2,178.57
6. Step 6: Final answer
   x = 1,601.08