Finding the Fourth Proportional to 1,355.47, 1,871.01 and 963.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.47 : 1,871.01 = 963.63 : x
2. Step 2: Convert to fraction form
   1,355.47/1,871.01 = 963.63/x
3. Step 3: Cross multiply
   1,355.47x = 1,871.01 × 963.63
4. Step 4: Simplify right side
   1,355.47x = 1,802,956.55
5. Step 5: Solve for x
   x = 1,802,956.55/1,355.47
6. Step 6: Final answer
   x = 1,330.13