Finding the Fourth Proportional to 2,012.11, 2,787.89 and 1,968.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.11 : 2,787.89 = 1,968.37 : x
2. Step 2: Convert to fraction form
   2,012.11/2,787.89 = 1,968.37/x
3. Step 3: Cross multiply
   2,012.11x = 2,787.89 × 1,968.37
4. Step 4: Simplify right side
   2,012.11x = 5,487,582.23
5. Step 5: Solve for x
   x = 5,487,582.23/2,012.11
6. Step 6: Final answer
   x = 2,727.28