Finding the Fourth Proportional to 1,096.27, 1,643.86 and 402.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.27 : 1,643.86 = 402.42 : x
2. Step 2: Convert to fraction form
   1,096.27/1,643.86 = 402.42/x
3. Step 3: Cross multiply
   1,096.27x = 1,643.86 × 402.42
4. Step 4: Simplify right side
   1,096.27x = 661,522.14
5. Step 5: Solve for x
   x = 661,522.14/1,096.27
6. Step 6: Final answer
   x = 603.43