Finding the Fourth Proportional to 2,238.24, 3,088.91 and 1,294.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.24 : 3,088.91 = 1,294.20 : x
2. Step 2: Convert to fraction form
   2,238.24/3,088.91 = 1,294.20/x
3. Step 3: Cross multiply
   2,238.24x = 3,088.91 × 1,294.20
4. Step 4: Simplify right side
   2,238.24x = 3,997,660.85
5. Step 5: Solve for x
   x = 3,997,660.85/2,238.24
6. Step 6: Final answer
   x = 1,786.07