Finding the Fourth Proportional to 2,451.08, 3,674.46 and 911.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,451.08 : 3,674.46 = 911.72 : x
2. Step 2: Convert to fraction form
   2,451.08/3,674.46 = 911.72/x
3. Step 3: Cross multiply
   2,451.08x = 3,674.46 × 911.72
4. Step 4: Simplify right side
   2,451.08x = 3,350,078.67
5. Step 5: Solve for x
   x = 3,350,078.67/2,451.08
6. Step 6: Final answer
   x = 1,366.78