Finding the Fourth Proportional to 2,066.10, 3,099.24 and 679.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.10 : 3,099.24 = 679.49 : x
2. Step 2: Convert to fraction form
   2,066.10/3,099.24 = 679.49/x
3. Step 3: Cross multiply
   2,066.10x = 3,099.24 × 679.49
4. Step 4: Simplify right side
   2,066.10x = 2,105,887.09
5. Step 5: Solve for x
   x = 2,105,887.09/2,066.10
6. Step 6: Final answer
   x = 1,019.26