Finding the Fourth Proportional to 1,092.64, 1,635.72 and 908.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.64 : 1,635.72 = 908.38 : x
2. Step 2: Convert to fraction form
   1,092.64/1,635.72 = 908.38/x
3. Step 3: Cross multiply
   1,092.64x = 1,635.72 × 908.38
4. Step 4: Simplify right side
   1,092.64x = 1,485,855.33
5. Step 5: Solve for x
   x = 1,485,855.33/1,092.64
6. Step 6: Final answer
   x = 1,359.88