Finding the Fourth Proportional to 2,233.88, 3,082.61 and 1,289.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,233.88 : 3,082.61 = 1,289.72 : x
2. Step 2: Convert to fraction form
   2,233.88/3,082.61 = 1,289.72/x
3. Step 3: Cross multiply
   2,233.88x = 3,082.61 × 1,289.72
4. Step 4: Simplify right side
   2,233.88x = 3,975,681.91
5. Step 5: Solve for x
   x = 3,975,681.91/2,233.88
6. Step 6: Final answer
   x = 1,779.72