Finding the Fourth Proportional to 1,100.80, 1,638.56 and 1,096

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.80 : 1,638.56 = 1,096 : x
2. Step 2: Convert to fraction form
   1,100.80/1,638.56 = 1,096/x
3. Step 3: Cross multiply
   1,100.80x = 1,638.56 × 1,096
4. Step 4: Simplify right side
   1,100.80x = 1,795,861.76
5. Step 5: Solve for x
   x = 1,795,861.76/1,100.80
6. Step 6: Final answer
   x = 1,631.42