Finding the Fourth Proportional to 3,859.98, 5,789.93 and 938.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,859.98 : 5,789.93 = 938.29 : x
2. Step 2: Convert to fraction form
   3,859.98/5,789.93 = 938.29/x
3. Step 3: Cross multiply
   3,859.98x = 5,789.93 × 938.29
4. Step 4: Simplify right side
   3,859.98x = 5,432,630.39
5. Step 5: Solve for x
   x = 5,432,630.39/3,859.98
6. Step 6: Final answer
   x = 1,407.42