Finding the Fourth Proportional to 3,086.50, 4,259.37 and 1,689.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086.50 : 4,259.37 = 1,689.25 : x
2. Step 2: Convert to fraction form
   3,086.50/4,259.37 = 1,689.25/x
3. Step 3: Cross multiply
   3,086.50x = 4,259.37 × 1,689.25
4. Step 4: Simplify right side
   3,086.50x = 7,195,140.77
5. Step 5: Solve for x
   x = 7,195,140.77/3,086.50
6. Step 6: Final answer
   x = 2,331.17