Finding the Fourth Proportional to 2,443.61, 3,665.86 and 800.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.61 : 3,665.86 = 800.24 : x
2. Step 2: Convert to fraction form
   2,443.61/3,665.86 = 800.24/x
3. Step 3: Cross multiply
   2,443.61x = 3,665.86 × 800.24
4. Step 4: Simplify right side
   2,443.61x = 2,933,567.81
5. Step 5: Solve for x
   x = 2,933,567.81/2,443.61
6. Step 6: Final answer
   x = 1,200.51