Finding the Fourth Proportional to 2,123.10, 3,182.20 and 806.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.10 : 3,182.20 = 806.02 : x
2. Step 2: Convert to fraction form
   2,123.10/3,182.20 = 806.02/x
3. Step 3: Cross multiply
   2,123.10x = 3,182.20 × 806.02
4. Step 4: Simplify right side
   2,123.10x = 2,564,906.87
5. Step 5: Solve for x
   x = 2,564,906.87/2,123.10
6. Step 6: Final answer
   x = 1,208.10