Finding the Fourth Proportional to 2,017.65, 3,026.99 and 978.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.65 : 3,026.99 = 978.15 : x
2. Step 2: Convert to fraction form
   2,017.65/3,026.99 = 978.15/x
3. Step 3: Cross multiply
   2,017.65x = 3,026.99 × 978.15
4. Step 4: Simplify right side
   2,017.65x = 2,960,850.27
5. Step 5: Solve for x
   x = 2,960,850.27/2,017.65
6. Step 6: Final answer
   x = 1,467.47