Finding the Fourth Proportional to 1,617.39, 2,238.41 and 1,578.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617.39 : 2,238.41 = 1,578.56 : x
2. Step 2: Convert to fraction form
   1,617.39/2,238.41 = 1,578.56/x
3. Step 3: Cross multiply
   1,617.39x = 2,238.41 × 1,578.56
4. Step 4: Simplify right side
   1,617.39x = 3,533,456.60
5. Step 5: Solve for x
   x = 3,533,456.60/1,617.39
6. Step 6: Final answer
   x = 2,184.67