Finding the Fourth Proportional to 2,066.88, 3,100.98 and 681.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.88 : 3,100.98 = 681.23 : x
2. Step 2: Convert to fraction form
   2,066.88/3,100.98 = 681.23/x
3. Step 3: Cross multiply
   2,066.88x = 3,100.98 × 681.23
4. Step 4: Simplify right side
   2,066.88x = 2,112,473.47
5. Step 5: Solve for x
   x = 2,112,473.47/2,066.88
6. Step 6: Final answer
   x = 1,022.06