Finding the Fourth Proportional to 2,066.54, 3,100.29 and 679.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.54 : 3,100.29 = 679.88 : x
2. Step 2: Convert to fraction form
   2,066.54/3,100.29 = 679.88/x
3. Step 3: Cross multiply
   2,066.54x = 3,100.29 × 679.88
4. Step 4: Simplify right side
   2,066.54x = 2,107,825.17
5. Step 5: Solve for x
   x = 2,107,825.17/2,066.54
6. Step 6: Final answer
   x = 1,019.98