Finding the Fourth Proportional to 2,574.65, 3,861.72 and 725.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,574.65 : 3,861.72 = 725.73 : x
2. Step 2: Convert to fraction form
   2,574.65/3,861.72 = 725.73/x
3. Step 3: Cross multiply
   2,574.65x = 3,861.72 × 725.73
4. Step 4: Simplify right side
   2,574.65x = 2,802,566.06
5. Step 5: Solve for x
   x = 2,802,566.06/2,574.65
6. Step 6: Final answer
   x = 1,088.53