Finding the Fourth Proportional to 2,443.68, 3,665.76 and 800.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.68 : 3,665.76 = 800.25 : x
2. Step 2: Convert to fraction form
   2,443.68/3,665.76 = 800.25/x
3. Step 3: Cross multiply
   2,443.68x = 3,665.76 × 800.25
4. Step 4: Simplify right side
   2,443.68x = 2,933,524.44
5. Step 5: Solve for x
   x = 2,933,524.44/2,443.68
6. Step 6: Final answer
   x = 1,200.45