Finding the Fourth Proportional to 2,825.54, 3,899.72 and 1,647.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,825.54 : 3,899.72 = 1,647.31 : x
2. Step 2: Convert to fraction form
   2,825.54/3,899.72 = 1,647.31/x
3. Step 3: Cross multiply
   2,825.54x = 3,899.72 × 1,647.31
4. Step 4: Simplify right side
   2,825.54x = 6,424,047.75
5. Step 5: Solve for x
   x = 6,424,047.75/2,825.54
6. Step 6: Final answer
   x = 2,273.56