Finding the Fourth Proportional to 2,443.05, 3,665.12 and 711.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.05 : 3,665.12 = 711.81 : x
2. Step 2: Convert to fraction form
   2,443.05/3,665.12 = 711.81/x
3. Step 3: Cross multiply
   2,443.05x = 3,665.12 × 711.81
4. Step 4: Simplify right side
   2,443.05x = 2,608,869.07
5. Step 5: Solve for x
   x = 2,608,869.07/2,443.05
6. Step 6: Final answer
   x = 1,067.87