Finding the Fourth Proportional to 2,274.56, 3,411.28 and 630.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,274.56 : 3,411.28 = 630.72 : x
2. Step 2: Convert to fraction form
   2,274.56/3,411.28 = 630.72/x
3. Step 3: Cross multiply
   2,274.56x = 3,411.28 × 630.72
4. Step 4: Simplify right side
   2,274.56x = 2,151,562.52
5. Step 5: Solve for x
   x = 2,151,562.52/2,274.56
6. Step 6: Final answer
   x = 945.92