Finding the Fourth Proportional to 2,711.88, 4,064.22 and 978.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,711.88 : 4,064.22 = 978.84 : x
2. Step 2: Convert to fraction form
   2,711.88/4,064.22 = 978.84/x
3. Step 3: Cross multiply
   2,711.88x = 4,064.22 × 978.84
4. Step 4: Simplify right side
   2,711.88x = 3,978,221.10
5. Step 5: Solve for x
   x = 3,978,221.10/2,711.88
6. Step 6: Final answer
   x = 1,466.96