Finding the Fourth Proportional to 2,233.33, 3,081.29 and 1,289.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,233.33 : 3,081.29 = 1,289.00 : x
2. Step 2: Convert to fraction form
   2,233.33/3,081.29 = 1,289.00/x
3. Step 3: Cross multiply
   2,233.33x = 3,081.29 × 1,289.00
4. Step 4: Simplify right side
   2,233.33x = 3,971,760.96
5. Step 5: Solve for x
   x = 3,971,760.96/2,233.33
6. Step 6: Final answer
   x = 1,778.41