Finding the Fourth Proportional to 2,152.69, 3,229.04 and 613.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.69 : 3,229.04 = 613.69 : x
2. Step 2: Convert to fraction form
   2,152.69/3,229.04 = 613.69/x
3. Step 3: Cross multiply
   2,152.69x = 3,229.04 × 613.69
4. Step 4: Simplify right side
   2,152.69x = 1,981,623.02
5. Step 5: Solve for x
   x = 1,981,623.02/2,152.69
6. Step 6: Final answer
   x = 920.53