Finding the Fourth Proportional to 1,222.24, 1,834.17 and 645.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222.24 : 1,834.17 = 645.52 : x
2. Step 2: Convert to fraction form
   1,222.24/1,834.17 = 645.52/x
3. Step 3: Cross multiply
   1,222.24x = 1,834.17 × 645.52
4. Step 4: Simplify right side
   1,222.24x = 1,183,993.42
5. Step 5: Solve for x
   x = 1,183,993.42/1,222.24
6. Step 6: Final answer
   x = 968.71