Finding the Fourth Proportional to 2,017.15, 3,026.73 and 718.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.15 : 3,026.73 = 718.72 : x
2. Step 2: Convert to fraction form
   2,017.15/3,026.73 = 718.72/x
3. Step 3: Cross multiply
   2,017.15x = 3,026.73 × 718.72
4. Step 4: Simplify right side
   2,017.15x = 2,175,371.39
5. Step 5: Solve for x
   x = 2,175,371.39/2,017.15
6. Step 6: Final answer
   x = 1,078.44