Finding the Fourth Proportional to 2,233.20, 3,081.84 and 1,238.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,233.20 : 3,081.84 = 1,238.58 : x
2. Step 2: Convert to fraction form
   2,233.20/3,081.84 = 1,238.58/x
3. Step 3: Cross multiply
   2,233.20x = 3,081.84 × 1,238.58
4. Step 4: Simplify right side
   2,233.20x = 3,817,089.98
5. Step 5: Solve for x
   x = 3,817,089.98/2,233.20
6. Step 6: Final answer
   x = 1,709.25