Finding the Fourth Proportional to 2,017.48, 3,026.60 and 978.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.48 : 3,026.60 = 978.20 : x
2. Step 2: Convert to fraction form
   2,017.48/3,026.60 = 978.20/x
3. Step 3: Cross multiply
   2,017.48x = 3,026.60 × 978.20
4. Step 4: Simplify right side
   2,017.48x = 2,960,620.12
5. Step 5: Solve for x
   x = 2,960,620.12/2,017.48
6. Step 6: Final answer
   x = 1,467.48