Finding the Fourth Proportional to 1,381.63, 1,906.02 and 963.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.63 : 1,906.02 = 963.01 : x
2. Step 2: Convert to fraction form
   1,381.63/1,906.02 = 963.01/x
3. Step 3: Cross multiply
   1,381.63x = 1,906.02 × 963.01
4. Step 4: Simplify right side
   1,381.63x = 1,835,516.32
5. Step 5: Solve for x
   x = 1,835,516.32/1,381.63
6. Step 6: Final answer
   x = 1,328.52