Finding the Fourth Proportional to 3,031.30, 4,185.27 and 2,321.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,031.30 : 4,185.27 = 2,321.89 : x
2. Step 2: Convert to fraction form
   3,031.30/4,185.27 = 2,321.89/x
3. Step 3: Cross multiply
   3,031.30x = 4,185.27 × 2,321.89
4. Step 4: Simplify right side
   3,031.30x = 9,717,736.56
5. Step 5: Solve for x
   x = 9,717,736.56/3,031.30
6. Step 6: Final answer
   x = 3,205.80