Finding the Fourth Proportional to 2,066.45, 3,099.03 and 679.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.45 : 3,099.03 = 679.50 : x
2. Step 2: Convert to fraction form
   2,066.45/3,099.03 = 679.50/x
3. Step 3: Cross multiply
   2,066.45x = 3,099.03 × 679.50
4. Step 4: Simplify right side
   2,066.45x = 2,105,785.35
5. Step 5: Solve for x
   x = 2,105,785.35/2,066.45
6. Step 6: Final answer
   x = 1,019.04