Finding the Fourth Proportional to 3,678.42, 5,076.89 and 2,187.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678.42 : 5,076.89 = 2,187.16 : x
2. Step 2: Convert to fraction form
   3,678.42/5,076.89 = 2,187.16/x
3. Step 3: Cross multiply
   3,678.42x = 5,076.89 × 2,187.16
4. Step 4: Simplify right side
   3,678.42x = 11,103,955.31
5. Step 5: Solve for x
   x = 11,103,955.31/3,678.42
6. Step 6: Final answer
   x = 3,018.68