Finding the Fourth Proportional to 2,265.72, 3,399.12 and 804.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,265.72 : 3,399.12 = 804.90 : x
2. Step 2: Convert to fraction form
   2,265.72/3,399.12 = 804.90/x
3. Step 3: Cross multiply
   2,265.72x = 3,399.12 × 804.90
4. Step 4: Simplify right side
   2,265.72x = 2,735,951.69
5. Step 5: Solve for x
   x = 2,735,951.69/2,265.72
6. Step 6: Final answer
   x = 1,207.54