Finding the Fourth Proportional to 1,105.38, 1,660.49 and 1,068.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.38 : 1,660.49 = 1,068.48 : x
2. Step 2: Convert to fraction form
   1,105.38/1,660.49 = 1,068.48/x
3. Step 3: Cross multiply
   1,105.38x = 1,660.49 × 1,068.48
4. Step 4: Simplify right side
   1,105.38x = 1,774,195.18
5. Step 5: Solve for x
   x = 1,774,195.18/1,105.38
6. Step 6: Final answer
   x = 1,605.05