Finding the Fourth Proportional to 2,412.06, 3,618.18 and 680.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,412.06 : 3,618.18 = 680.73 : x
2. Step 2: Convert to fraction form
   2,412.06/3,618.18 = 680.73/x
3. Step 3: Cross multiply
   2,412.06x = 3,618.18 × 680.73
4. Step 4: Simplify right side
   2,412.06x = 2,463,003.67
5. Step 5: Solve for x
   x = 2,463,003.67/2,412.06
6. Step 6: Final answer
   x = 1,021.12