Finding the Fourth Proportional to 2,066.48, 3,100.26 and 680.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.48 : 3,100.26 = 680.02 : x
2. Step 2: Convert to fraction form
   2,066.48/3,100.26 = 680.02/x
3. Step 3: Cross multiply
   2,066.48x = 3,100.26 × 680.02
4. Step 4: Simplify right side
   2,066.48x = 2,108,238.81
5. Step 5: Solve for x
   x = 2,108,238.81/2,066.48
6. Step 6: Final answer
   x = 1,020.21