Finding the Fourth Proportional to 3,271.69, 4,905.49 and 2,159.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,271.69 : 4,905.49 = 2,159.89 : x
2. Step 2: Convert to fraction form
   3,271.69/4,905.49 = 2,159.89/x
3. Step 3: Cross multiply
   3,271.69x = 4,905.49 × 2,159.89
4. Step 4: Simplify right side
   3,271.69x = 10,595,312.90
5. Step 5: Solve for x
   x = 10,595,312.90/3,271.69
6. Step 6: Final answer
   x = 3,238.48