Finding the Fourth Proportional to 2,067.20, 3,100.19 and 1,142.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.20 : 3,100.19 = 1,142.58 : x
2. Step 2: Convert to fraction form
   2,067.20/3,100.19 = 1,142.58/x
3. Step 3: Cross multiply
   2,067.20x = 3,100.19 × 1,142.58
4. Step 4: Simplify right side
   2,067.20x = 3,542,209.38
5. Step 5: Solve for x
   x = 3,542,209.38/2,067.20
6. Step 6: Final answer
   x = 1,713.53