Finding the Fourth Proportional to 2,472.67, 3,707.85 and 912.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,472.67 : 3,707.85 = 912.28 : x
2. Step 2: Convert to fraction form
   2,472.67/3,707.85 = 912.28/x
3. Step 3: Cross multiply
   2,472.67x = 3,707.85 × 912.28
4. Step 4: Simplify right side
   2,472.67x = 3,382,597.40
5. Step 5: Solve for x
   x = 3,382,597.40/2,472.67
6. Step 6: Final answer
   x = 1,367.99