Finding the Fourth Proportional to 2,065.73, 3,099.13 and 679.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.73 : 3,099.13 = 679.28 : x
2. Step 2: Convert to fraction form
   2,065.73/3,099.13 = 679.28/x
3. Step 3: Cross multiply
   2,065.73x = 3,099.13 × 679.28
4. Step 4: Simplify right side
   2,065.73x = 2,105,159.83
5. Step 5: Solve for x
   x = 2,105,159.83/2,065.73
6. Step 6: Final answer
   x = 1,019.09