Finding the Fourth Proportional to 2,912.73, 4,369.04 and 721.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,912.73 : 4,369.04 = 721.46 : x
2. Step 2: Convert to fraction form
   2,912.73/4,369.04 = 721.46/x
3. Step 3: Cross multiply
   2,912.73x = 4,369.04 × 721.46
4. Step 4: Simplify right side
   2,912.73x = 3,152,077.10
5. Step 5: Solve for x
   x = 3,152,077.10/2,912.73
6. Step 6: Final answer
   x = 1,082.17