Finding the Fourth Proportional to 2,661.87, 3,992.29 and 1,018.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661.87 : 3,992.29 = 1,018.03 : x
2. Step 2: Convert to fraction form
   2,661.87/3,992.29 = 1,018.03/x
3. Step 3: Cross multiply
   2,661.87x = 3,992.29 × 1,018.03
4. Step 4: Simplify right side
   2,661.87x = 4,064,258.46
5. Step 5: Solve for x
   x = 4,064,258.46/2,661.87
6. Step 6: Final answer
   x = 1,526.84