Finding the Fourth Proportional to 2,017.72, 3,023.16 and 978.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.72 : 3,023.16 = 978.22 : x
2. Step 2: Convert to fraction form
   2,017.72/3,023.16 = 978.22/x
3. Step 3: Cross multiply
   2,017.72x = 3,023.16 × 978.22
4. Step 4: Simplify right side
   2,017.72x = 2,957,315.58
5. Step 5: Solve for x
   x = 2,957,315.58/2,017.72
6. Step 6: Final answer
   x = 1,465.67