Finding the Fourth Proportional to 3,857.33, 5,785.94 and 935.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,857.33 : 5,785.94 = 935.61 : x
2. Step 2: Convert to fraction form
   3,857.33/5,785.94 = 935.61/x
3. Step 3: Cross multiply
   3,857.33x = 5,785.94 × 935.61
4. Step 4: Simplify right side
   3,857.33x = 5,413,383.32
5. Step 5: Solve for x
   x = 5,413,383.32/3,857.33
6. Step 6: Final answer
   x = 1,403.40