Finding the Fourth Proportional to 2,066.98, 3,100.67 and 680.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.98 : 3,100.67 = 680.32 : x
2. Step 2: Convert to fraction form
   2,066.98/3,100.67 = 680.32/x
3. Step 3: Cross multiply
   2,066.98x = 3,100.67 × 680.32
4. Step 4: Simplify right side
   2,066.98x = 2,109,448.29
5. Step 5: Solve for x
   x = 2,109,448.29/2,066.98
6. Step 6: Final answer
   x = 1,020.55