Finding the Fourth Proportional to 1,921.69, 2,884.82 and 1,617.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.69 : 2,884.82 = 1,617.33 : x
2. Step 2: Convert to fraction form
   1,921.69/2,884.82 = 1,617.33/x
3. Step 3: Cross multiply
   1,921.69x = 2,884.82 × 1,617.33
4. Step 4: Simplify right side
   1,921.69x = 4,665,708.66
5. Step 5: Solve for x
   x = 4,665,708.66/1,921.69
6. Step 6: Final answer
   x = 2,427.92