Finding the Fourth Proportional to 2,123.11, 3,160.82 and 2,112.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.11 : 3,160.82 = 2,112.82 : x
2. Step 2: Convert to fraction form
   2,123.11/3,160.82 = 2,112.82/x
3. Step 3: Cross multiply
   2,123.11x = 3,160.82 × 2,112.82
4. Step 4: Simplify right side
   2,123.11x = 6,678,241.09
5. Step 5: Solve for x
   x = 6,678,241.09/2,123.11
6. Step 6: Final answer
   x = 3,145.50