Finding the Fourth Proportional to 2,443.74, 3,665.86 and 799.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.74 : 3,665.86 = 799.90 : x
2. Step 2: Convert to fraction form
   2,443.74/3,665.86 = 799.90/x
3. Step 3: Cross multiply
   2,443.74x = 3,665.86 × 799.90
4. Step 4: Simplify right side
   2,443.74x = 2,932,320.56
5. Step 5: Solve for x
   x = 2,932,320.56/2,443.74
6. Step 6: Final answer
   x = 1,199.93