Finding the Fourth Proportional to 3,678.18, 5,074.15 and 2,185.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678.18 : 5,074.15 = 2,185.25 : x
2. Step 2: Convert to fraction form
   3,678.18/5,074.15 = 2,185.25/x
3. Step 3: Cross multiply
   3,678.18x = 5,074.15 × 2,185.25
4. Step 4: Simplify right side
   3,678.18x = 11,088,286.29
5. Step 5: Solve for x
   x = 11,088,286.29/3,678.18
6. Step 6: Final answer
   x = 3,014.61