Finding the Fourth Proportional to 2,622.23, 3,932.90 and 978.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.23 : 3,932.90 = 978.33 : x
2. Step 2: Convert to fraction form
   2,622.23/3,932.90 = 978.33/x
3. Step 3: Cross multiply
   2,622.23x = 3,932.90 × 978.33
4. Step 4: Simplify right side
   2,622.23x = 3,847,669.17
5. Step 5: Solve for x
   x = 3,847,669.17/2,622.23
6. Step 6: Final answer
   x = 1,467.33