Finding the Fourth Proportional to 2,573.72, 3,860.56 and 724.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,573.72 : 3,860.56 = 724.84 : x
2. Step 2: Convert to fraction form
   2,573.72/3,860.56 = 724.84/x
3. Step 3: Cross multiply
   2,573.72x = 3,860.56 × 724.84
4. Step 4: Simplify right side
   2,573.72x = 2,798,276.85
5. Step 5: Solve for x
   x = 2,798,276.85/2,573.72
6. Step 6: Final answer
   x = 1,087.25