Finding the Fourth Proportional to 3,685.50, 5,085.99 and 2,288.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,685.50 : 5,085.99 = 2,288.25 : x
2. Step 2: Convert to fraction form
   3,685.50/5,085.99 = 2,288.25/x
3. Step 3: Cross multiply
   3,685.50x = 5,085.99 × 2,288.25
4. Step 4: Simplify right side
   3,685.50x = 11,638,016.62
5. Step 5: Solve for x
   x = 11,638,016.62/3,685.50
6. Step 6: Final answer
   x = 3,157.79