Finding the Fourth Proportional to 2,067.06, 3,100.89 and 680.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.06 : 3,100.89 = 680.13 : x
2. Step 2: Convert to fraction form
   2,067.06/3,100.89 = 680.13/x
3. Step 3: Cross multiply
   2,067.06x = 3,100.89 × 680.13
4. Step 4: Simplify right side
   2,067.06x = 2,109,019.94
5. Step 5: Solve for x
   x = 2,109,019.94/2,067.06
6. Step 6: Final answer
   x = 1,020.30