Finding the Fourth Proportional to 2,067.60, 3,101.91 and 1,028.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.60 : 3,101.91 = 1,028.09 : x
2. Step 2: Convert to fraction form
   2,067.60/3,101.91 = 1,028.09/x
3. Step 3: Cross multiply
   2,067.60x = 3,101.91 × 1,028.09
4. Step 4: Simplify right side
   2,067.60x = 3,189,046.55
5. Step 5: Solve for x
   x = 3,189,046.55/2,067.60
6. Step 6: Final answer
   x = 1,542.39