Finding the Fourth Proportional to 1,096.18, 1,645.48 and 1,092.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.18 : 1,645.48 = 1,092.12 : x
2. Step 2: Convert to fraction form
   1,096.18/1,645.48 = 1,092.12/x
3. Step 3: Cross multiply
   1,096.18x = 1,645.48 × 1,092.12
4. Step 4: Simplify right side
   1,096.18x = 1,797,061.62
5. Step 5: Solve for x
   x = 1,797,061.62/1,096.18
6. Step 6: Final answer
   x = 1,639.39