Finding the Fourth Proportional to 3,086.37, 4,259.25 and 1,689.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086.37 : 4,259.25 = 1,689.12 : x
2. Step 2: Convert to fraction form
   3,086.37/4,259.25 = 1,689.12/x
3. Step 3: Cross multiply
   3,086.37x = 4,259.25 × 1,689.12
4. Step 4: Simplify right side
   3,086.37x = 7,194,384.36
5. Step 5: Solve for x
   x = 7,194,384.36/3,086.37
6. Step 6: Final answer
   x = 2,331.02