Finding the Fourth Proportional to 2,238.60, 3,089.28 and 1,294.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.60 : 3,089.28 = 1,294.56 : x
2. Step 2: Convert to fraction form
   2,238.60/3,089.28 = 1,294.56/x
3. Step 3: Cross multiply
   2,238.60x = 3,089.28 × 1,294.56
4. Step 4: Simplify right side
   2,238.60x = 3,999,258.32
5. Step 5: Solve for x
   x = 3,999,258.32/2,238.60
6. Step 6: Final answer
   x = 1,786.50