Finding the Fourth Proportional to 2,443.92, 3,665.49 and 800.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.92 : 3,665.49 = 800.43 : x
2. Step 2: Convert to fraction form
   2,443.92/3,665.49 = 800.43/x
3. Step 3: Cross multiply
   2,443.92x = 3,665.49 × 800.43
4. Step 4: Simplify right side
   2,443.92x = 2,933,968.16
5. Step 5: Solve for x
   x = 2,933,968.16/2,443.92
6. Step 6: Final answer
   x = 1,200.52