Finding the Fourth Proportional to 1,100.49, 1,663.23 and 1,081.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.49 : 1,663.23 = 1,081.36 : x
2. Step 2: Convert to fraction form
   1,100.49/1,663.23 = 1,081.36/x
3. Step 3: Cross multiply
   1,100.49x = 1,663.23 × 1,081.36
4. Step 4: Simplify right side
   1,100.49x = 1,798,542.73
5. Step 5: Solve for x
   x = 1,798,542.73/1,100.49
6. Step 6: Final answer
   x = 1,634.30