Finding the Fourth Proportional to 2,662.97, 3,991.55 and 1,018.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.97 : 3,991.55 = 1,018.80 : x
2. Step 2: Convert to fraction form
   2,662.97/3,991.55 = 1,018.80/x
3. Step 3: Cross multiply
   2,662.97x = 3,991.55 × 1,018.80
4. Step 4: Simplify right side
   2,662.97x = 4,066,586.05
5. Step 5: Solve for x
   x = 4,066,586.05/2,662.97
6. Step 6: Final answer
   x = 1,527.09