Finding the Fourth Proportional to 2,067.56, 3,101.55 and 680.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.56 : 3,101.55 = 680.33 : x
2. Step 2: Convert to fraction form
   2,067.56/3,101.55 = 680.33/x
3. Step 3: Cross multiply
   2,067.56x = 3,101.55 × 680.33
4. Step 4: Simplify right side
   2,067.56x = 2,110,074.11
5. Step 5: Solve for x
   x = 2,110,074.11/2,067.56
6. Step 6: Final answer
   x = 1,020.56