Finding the Fourth Proportional to 2,074.27, 3,109.93 and 978.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.27 : 3,109.93 = 978.07 : x
2. Step 2: Convert to fraction form
   2,074.27/3,109.93 = 978.07/x
3. Step 3: Cross multiply
   2,074.27x = 3,109.93 × 978.07
4. Step 4: Simplify right side
   2,074.27x = 3,041,729.24
5. Step 5: Solve for x
   x = 3,041,729.24/2,074.27
6. Step 6: Final answer
   x = 1,466.41