Finding the Fourth Proportional to 3,428.72, 5,143.38 and 963.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428.72 : 5,143.38 = 963.56 : x
2. Step 2: Convert to fraction form
   3,428.72/5,143.38 = 963.56/x
3. Step 3: Cross multiply
   3,428.72x = 5,143.38 × 963.56
4. Step 4: Simplify right side
   3,428.72x = 4,955,955.23
5. Step 5: Solve for x
   x = 4,955,955.23/3,428.72
6. Step 6: Final answer
   x = 1,445.42