Finding the Fourth Proportional to 2,067.49, 3,100.06 and 680.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.49 : 3,100.06 = 680.45 : x
2. Step 2: Convert to fraction form
   2,067.49/3,100.06 = 680.45/x
3. Step 3: Cross multiply
   2,067.49x = 3,100.06 × 680.45
4. Step 4: Simplify right side
   2,067.49x = 2,109,432.42
5. Step 5: Solve for x
   x = 2,109,432.42/2,067.49
6. Step 6: Final answer
   x = 1,020.29