Finding the Fourth Proportional to 2,445.20, 3,667.78 and 801.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,445.20 : 3,667.78 = 801.73 : x
2. Step 2: Convert to fraction form
   2,445.20/3,667.78 = 801.73/x
3. Step 3: Cross multiply
   2,445.20x = 3,667.78 × 801.73
4. Step 4: Simplify right side
   2,445.20x = 2,940,546.91
5. Step 5: Solve for x
   x = 2,940,546.91/2,445.20
6. Step 6: Final answer
   x = 1,202.58