Finding the Fourth Proportional to 2,233.55, 3,082.30 and 1,238.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,233.55 : 3,082.30 = 1,238.99 : x
2. Step 2: Convert to fraction form
   2,233.55/3,082.30 = 1,238.99/x
3. Step 3: Cross multiply
   2,233.55x = 3,082.30 × 1,238.99
4. Step 4: Simplify right side
   2,233.55x = 3,818,920.37
5. Step 5: Solve for x
   x = 3,818,920.37/2,233.55
6. Step 6: Final answer
   x = 1,709.80