Finding the Fourth Proportional to 3,859.82, 5,789.71 and 938.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,859.82 : 5,789.71 = 938.12 : x
2. Step 2: Convert to fraction form
   3,859.82/5,789.71 = 938.12/x
3. Step 3: Cross multiply
   3,859.82x = 5,789.71 × 938.12
4. Step 4: Simplify right side
   3,859.82x = 5,431,425.93
5. Step 5: Solve for x
   x = 5,431,425.93/3,859.82
6. Step 6: Final answer
   x = 1,407.17