Finding the Fourth Proportional to 2,661.62, 3,992.46 and 1,018.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.62 : 3,992.46 = 1,018.25 : x
2. Step 2: Convert to fraction form
   2,661.62/3,992.46 = 1,018.25/x
3. Step 3: Cross multiply
   2,661.62x = 3,992.46 × 1,018.25
4. Step 4: Simplify right side
   2,661.62x = 4,065,302.43
5. Step 5: Solve for x
   x = 4,065,302.43/2,661.62
6. Step 6: Final answer
   x = 1,527.38