Finding the Fourth Proportional to 2,443.20, 3,664.53 and 711.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.20 : 3,664.53 = 711.83 : x
2. Step 2: Convert to fraction form
   2,443.20/3,664.53 = 711.83/x
3. Step 3: Cross multiply
   2,443.20x = 3,664.53 × 711.83
4. Step 4: Simplify right side
   2,443.20x = 2,608,504.07
5. Step 5: Solve for x
   x = 2,608,504.07/2,443.20
6. Step 6: Final answer
   x = 1,067.66