Finding the Fourth Proportional to 2,067.20, 3,100.50 and 680.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.20 : 3,100.50 = 680.48 : x
2. Step 2: Convert to fraction form
   2,067.20/3,100.50 = 680.48/x
3. Step 3: Cross multiply
   2,067.20x = 3,100.50 × 680.48
4. Step 4: Simplify right side
   2,067.20x = 2,109,828.24
5. Step 5: Solve for x
   x = 2,109,828.24/2,067.20
6. Step 6: Final answer
   x = 1,020.62