Finding the Fourth Proportional to 2,233.35, 3,081.57 and 1,238.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,233.35 : 3,081.57 = 1,238.40 : x
2. Step 2: Convert to fraction form
   2,233.35/3,081.57 = 1,238.40/x
3. Step 3: Cross multiply
   2,233.35x = 3,081.57 × 1,238.40
4. Step 4: Simplify right side
   2,233.35x = 3,816,216.29
5. Step 5: Solve for x
   x = 3,816,216.29/2,233.35
6. Step 6: Final answer
   x = 1,708.74