Finding the Fourth Proportional to 2,073.24, 3,108.60 and 978.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.24 : 3,108.60 = 978.12 : x
2. Step 2: Convert to fraction form
   2,073.24/3,108.60 = 978.12/x
3. Step 3: Cross multiply
   2,073.24x = 3,108.60 × 978.12
4. Step 4: Simplify right side
   2,073.24x = 3,040,583.83
5. Step 5: Solve for x
   x = 3,040,583.83/2,073.24
6. Step 6: Final answer
   x = 1,466.59