Finding the Fourth Proportional to 2,066.28, 3,099.56 and 679.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.28 : 3,099.56 = 679.25 : x
2. Step 2: Convert to fraction form
   2,066.28/3,099.56 = 679.25/x
3. Step 3: Cross multiply
   2,066.28x = 3,099.56 × 679.25
4. Step 4: Simplify right side
   2,066.28x = 2,105,357.24
5. Step 5: Solve for x
   x = 2,105,357.24/2,066.28
6. Step 6: Final answer
   x = 1,018.91