Finding the Fourth Proportional to 3,395.42, 5,086.54 and 1,986.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,395.42 : 5,086.54 = 1,986.42 : x
2. Step 2: Convert to fraction form
   3,395.42/5,086.54 = 1,986.42/x
3. Step 3: Cross multiply
   3,395.42x = 5,086.54 × 1,986.42
4. Step 4: Simplify right side
   3,395.42x = 10,104,007.27
5. Step 5: Solve for x
   x = 10,104,007.27/3,395.42
6. Step 6: Final answer
   x = 2,975.78