Finding the Fourth Proportional to 3,391.81, 5,087.18 and 926.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,391.81 : 5,087.18 = 926.82 : x
2. Step 2: Convert to fraction form
   3,391.81/5,087.18 = 926.82/x
3. Step 3: Cross multiply
   3,391.81x = 5,087.18 × 926.82
4. Step 4: Simplify right side
   3,391.81x = 4,714,902.48
5. Step 5: Solve for x
   x = 4,714,902.48/3,391.81
6. Step 6: Final answer
   x = 1,390.09