Finding the Fourth Proportional to 5,222.78, 7,834.15 and 1,327.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,222.78 : 7,834.15 = 1,327.18 : x
2. Step 2: Convert to fraction form
   5,222.78/7,834.15 = 1,327.18/x
3. Step 3: Cross multiply
   5,222.78x = 7,834.15 × 1,327.18
4. Step 4: Simplify right side
   5,222.78x = 10,397,327.20
5. Step 5: Solve for x
   x = 10,397,327.20/5,222.78
6. Step 6: Final answer
   x = 1,990.76