Finding the Fourth Proportional to 2,074.67, 3,110.21 and 978.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.67 : 3,110.21 = 978.27 : x
2. Step 2: Convert to fraction form
   2,074.67/3,110.21 = 978.27/x
3. Step 3: Cross multiply
   2,074.67x = 3,110.21 × 978.27
4. Step 4: Simplify right side
   2,074.67x = 3,042,625.14
5. Step 5: Solve for x
   x = 3,042,625.14/2,074.67
6. Step 6: Final answer
   x = 1,466.56