Finding the Fourth Proportional to 2,443.18, 3,664.78 and 799.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.18 : 3,664.78 = 799.88 : x
2. Step 2: Convert to fraction form
   2,443.18/3,664.78 = 799.88/x
3. Step 3: Cross multiply
   2,443.18x = 3,664.78 × 799.88
4. Step 4: Simplify right side
   2,443.18x = 2,931,384.23
5. Step 5: Solve for x
   x = 2,931,384.23/2,443.18
6. Step 6: Final answer
   x = 1,199.82