Finding the Fourth Proportional to 2,693.31, 4,039.84 and 938.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,693.31 : 4,039.84 = 938.71 : x
2. Step 2: Convert to fraction form
   2,693.31/4,039.84 = 938.71/x
3. Step 3: Cross multiply
   2,693.31x = 4,039.84 × 938.71
4. Step 4: Simplify right side
   2,693.31x = 3,792,238.21
5. Step 5: Solve for x
   x = 3,792,238.21/2,693.31
6. Step 6: Final answer
   x = 1,408.02