Finding the Fourth Proportional to 3,428.47, 5,143.01 and 963.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428.47 : 5,143.01 = 963.31 : x
2. Step 2: Convert to fraction form
   3,428.47/5,143.01 = 963.31/x
3. Step 3: Cross multiply
   3,428.47x = 5,143.01 × 963.31
4. Step 4: Simplify right side
   3,428.47x = 4,954,308.15
5. Step 5: Solve for x
   x = 4,954,308.15/3,428.47
6. Step 6: Final answer
   x = 1,445.05