Finding the Fourth Proportional to 1,644.05, 2,268.81 and 935.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.05 : 2,268.81 = 935.86 : x
2. Step 2: Convert to fraction form
   1,644.05/2,268.81 = 935.86/x
3. Step 3: Cross multiply
   1,644.05x = 2,268.81 × 935.86
4. Step 4: Simplify right side
   1,644.05x = 2,123,287.85
5. Step 5: Solve for x
   x = 2,123,287.85/1,644.05
6. Step 6: Final answer
   x = 1,291.50