Finding the Fourth Proportional to 2,066.73, 3,100.63 and 680.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.73 : 3,100.63 = 680.28 : x
2. Step 2: Convert to fraction form
   2,066.73/3,100.63 = 680.28/x
3. Step 3: Cross multiply
   2,066.73x = 3,100.63 × 680.28
4. Step 4: Simplify right side
   2,066.73x = 2,109,296.58
5. Step 5: Solve for x
   x = 2,109,296.58/2,066.73
6. Step 6: Final answer
   x = 1,020.60