Finding the Fourth Proportional to 2,078.82, 3,123.09 and 1,918.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.82 : 3,123.09 = 1,918.44 : x
2. Step 2: Convert to fraction form
   2,078.82/3,123.09 = 1,918.44/x
3. Step 3: Cross multiply
   2,078.82x = 3,123.09 × 1,918.44
4. Step 4: Simplify right side
   2,078.82x = 5,991,460.78
5. Step 5: Solve for x
   x = 5,991,460.78/2,078.82
6. Step 6: Final answer
   x = 2,882.15