Finding the Fourth Proportional to 2,067.23, 3,100.51 and 680.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.23 : 3,100.51 = 680.51 : x
2. Step 2: Convert to fraction form
   2,067.23/3,100.51 = 680.51/x
3. Step 3: Cross multiply
   2,067.23x = 3,100.51 × 680.51
4. Step 4: Simplify right side
   2,067.23x = 2,109,928.06
5. Step 5: Solve for x
   x = 2,109,928.06/2,067.23
6. Step 6: Final answer
   x = 1,020.65