Finding the Fourth Proportional to 2,067.19, 3,100.98 and 679.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.19 : 3,100.98 = 679.96 : x
2. Step 2: Convert to fraction form
   2,067.19/3,100.98 = 679.96/x
3. Step 3: Cross multiply
   2,067.19x = 3,100.98 × 679.96
4. Step 4: Simplify right side
   2,067.19x = 2,108,523.46
5. Step 5: Solve for x
   x = 2,108,523.46/2,067.19
6. Step 6: Final answer
   x = 1,020.00