Finding the Fourth Proportional to 2,391.21, 3,300.56 and 1,647.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.21 : 3,300.56 = 1,647.02 : x
2. Step 2: Convert to fraction form
   2,391.21/3,300.56 = 1,647.02/x
3. Step 3: Cross multiply
   2,391.21x = 3,300.56 × 1,647.02
4. Step 4: Simplify right side
   2,391.21x = 5,436,088.33
5. Step 5: Solve for x
   x = 5,436,088.33/2,391.21
6. Step 6: Final answer
   x = 2,273.36