Finding the Fourth Proportional to 2,662.66, 3,993.86 and 1,019.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.66 : 3,993.86 = 1,019.08 : x
2. Step 2: Convert to fraction form
   2,662.66/3,993.86 = 1,019.08/x
3. Step 3: Cross multiply
   2,662.66x = 3,993.86 × 1,019.08
4. Step 4: Simplify right side
   2,662.66x = 4,070,062.85
5. Step 5: Solve for x
   x = 4,070,062.85/2,662.66
6. Step 6: Final answer
   x = 1,528.57