Finding the Fourth Proportional to 2,066.95, 3,100.88 and 680.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.95 : 3,100.88 = 680.23 : x
2. Step 2: Convert to fraction form
   2,066.95/3,100.88 = 680.23/x
3. Step 3: Cross multiply
   2,066.95x = 3,100.88 × 680.23
4. Step 4: Simplify right side
   2,066.95x = 2,109,300.45
5. Step 5: Solve for x
   x = 2,109,300.45/2,066.95
6. Step 6: Final answer
   x = 1,020.49