Finding the Fourth Proportional to 3,851.82, 5,315.31 and 2,173.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,851.82 : 5,315.31 = 2,173.23 : x
2. Step 2: Convert to fraction form
   3,851.82/5,315.31 = 2,173.23/x
3. Step 3: Cross multiply
   3,851.82x = 5,315.31 × 2,173.23
4. Step 4: Simplify right side
   3,851.82x = 11,551,391.15
5. Step 5: Solve for x
   x = 11,551,391.15/3,851.82
6. Step 6: Final answer
   x = 2,998.94