Finding the Fourth Proportional to 2,207.72, 3,311.89 and 746.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,207.72 : 3,311.89 = 746.48 : x
2. Step 2: Convert to fraction form
   2,207.72/3,311.89 = 746.48/x
3. Step 3: Cross multiply
   2,207.72x = 3,311.89 × 746.48
4. Step 4: Simplify right side
   2,207.72x = 2,472,268.86
5. Step 5: Solve for x
   x = 2,472,268.86/2,207.72
6. Step 6: Final answer
   x = 1,119.83