Finding the Fourth Proportional to 2,233.45, 3,082.61 and 1,289.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,233.45 : 3,082.61 = 1,289.86 : x
2. Step 2: Convert to fraction form
   2,233.45/3,082.61 = 1,289.86/x
3. Step 3: Cross multiply
   2,233.45x = 3,082.61 × 1,289.86
4. Step 4: Simplify right side
   2,233.45x = 3,976,135.33
5. Step 5: Solve for x
   x = 3,976,135.33/2,233.45
6. Step 6: Final answer
   x = 1,780.27