Finding the Fourth Proportional to 2,067.53, 3,100.98 and 680.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.53 : 3,100.98 = 680.81 : x
2. Step 2: Convert to fraction form
   2,067.53/3,100.98 = 680.81/x
3. Step 3: Cross multiply
   2,067.53x = 3,100.98 × 680.81
4. Step 4: Simplify right side
   2,067.53x = 2,111,165.24
5. Step 5: Solve for x
   x = 2,111,165.24/2,067.53
6. Step 6: Final answer
   x = 1,021.11