Finding the Fourth Proportional to 2,067.46, 3,101.69 and 680.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.46 : 3,101.69 = 680.72 : x
2. Step 2: Convert to fraction form
   2,067.46/3,101.69 = 680.72/x
3. Step 3: Cross multiply
   2,067.46x = 3,101.69 × 680.72
4. Step 4: Simplify right side
   2,067.46x = 2,111,368.61
5. Step 5: Solve for x
   x = 2,111,368.61/2,067.46
6. Step 6: Final answer
   x = 1,021.24