Finding the Fourth Proportional to 2,067.75, 3,100.97 and 680.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.75 : 3,100.97 = 680.77 : x
2. Step 2: Convert to fraction form
   2,067.75/3,100.97 = 680.77/x
3. Step 3: Cross multiply
   2,067.75x = 3,100.97 × 680.77
4. Step 4: Simplify right side
   2,067.75x = 2,111,051.70
5. Step 5: Solve for x
   x = 2,111,051.70/2,067.75
6. Step 6: Final answer
   x = 1,020.94