Finding the Fourth Proportional to 3,086.77, 4,259.75 and 1,689.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086.77 : 4,259.75 = 1,689.52 : x
2. Step 2: Convert to fraction form
   3,086.77/4,259.75 = 1,689.52/x
3. Step 3: Cross multiply
   3,086.77x = 4,259.75 × 1,689.52
4. Step 4: Simplify right side
   3,086.77x = 7,196,924.37
5. Step 5: Solve for x
   x = 7,196,924.37/3,086.77
6. Step 6: Final answer
   x = 2,331.54