Finding the Fourth Proportional to 1,096.42, 1,643.17 and 402.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.42 : 1,643.17 = 402.44 : x
2. Step 2: Convert to fraction form
   1,096.42/1,643.17 = 402.44/x
3. Step 3: Cross multiply
   1,096.42x = 1,643.17 × 402.44
4. Step 4: Simplify right side
   1,096.42x = 661,275.32
5. Step 5: Solve for x
   x = 661,275.32/1,096.42
6. Step 6: Final answer
   x = 603.12