Finding the Fourth Proportional to 2,123.05, 3,182.76 and 806.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.05 : 3,182.76 = 806.07 : x
2. Step 2: Convert to fraction form
   2,123.05/3,182.76 = 806.07/x
3. Step 3: Cross multiply
   2,123.05x = 3,182.76 × 806.07
4. Step 4: Simplify right side
   2,123.05x = 2,565,511.44
5. Step 5: Solve for x
   x = 2,565,511.44/2,123.05
6. Step 6: Final answer
   x = 1,208.41