Finding the Fourth Proportional to 2,123,456.05, 2,981,236.55 and 2,123,456.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123,456.05 : 2,981,236.55 = 2,123,456.05 : x
2. Step 2: Convert to fraction form
   2,123,456.05/2,981,236.55 = 2,123,456.05/x
3. Step 3: Cross multiply
   2,123,456.05x = 2,981,236.55 × 2,123,456.05
4. Step 4: Simplify right side
   2,123,456.05x = 6,330,524,788,578.63
5. Step 5: Solve for x
   x = 6,330,524,788,578.63/2,123,456.05
6. Step 6: Final answer
   x = 2,981,236.55