Finding the Fourth Proportional to 2,149.07, 3,222.83 and 978.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,149.07 : 3,222.83 = 978.08 : x
2. Step 2: Convert to fraction form
   2,149.07/3,222.83 = 978.08/x
3. Step 3: Cross multiply
   2,149.07x = 3,222.83 × 978.08
4. Step 4: Simplify right side
   2,149.07x = 3,152,164.56
5. Step 5: Solve for x
   x = 3,152,164.56/2,149.07
6. Step 6: Final answer
   x = 1,466.76