Finding the Fourth Proportional to 2,370.22, 3,271.89 and 1,689.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,370.22 : 3,271.89 = 1,689.28 : x
2. Step 2: Convert to fraction form
   2,370.22/3,271.89 = 1,689.28/x
3. Step 3: Cross multiply
   2,370.22x = 3,271.89 × 1,689.28
4. Step 4: Simplify right side
   2,370.22x = 5,527,138.34
5. Step 5: Solve for x
   x = 5,527,138.34/2,370.22
6. Step 6: Final answer
   x = 2,331.91