Finding the Fourth Proportional to 2,712.13, 4,064.94 and 978.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,712.13 : 4,064.94 = 978.73 : x
2. Step 2: Convert to fraction form
   2,712.13/4,064.94 = 978.73/x
3. Step 3: Cross multiply
   2,712.13x = 4,064.94 × 978.73
4. Step 4: Simplify right side
   2,712.13x = 3,978,478.73
5. Step 5: Solve for x
   x = 3,978,478.73/2,712.13
6. Step 6: Final answer
   x = 1,466.92