Finding the Fourth Proportional to 2,661.75, 3,992.46 and 1,017.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.75 : 3,992.46 = 1,017.55 : x
2. Step 2: Convert to fraction form
   2,661.75/3,992.46 = 1,017.55/x
3. Step 3: Cross multiply
   2,661.75x = 3,992.46 × 1,017.55
4. Step 4: Simplify right side
   2,661.75x = 4,062,507.71
5. Step 5: Solve for x
   x = 4,062,507.71/2,661.75
6. Step 6: Final answer
   x = 1,526.26