Finding the Fourth Proportional to 2,388.50, 3,578.58 and 1,658.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.50 : 3,578.58 = 1,658.54 : x
2. Step 2: Convert to fraction form
   2,388.50/3,578.58 = 1,658.54/x
3. Step 3: Cross multiply
   2,388.50x = 3,578.58 × 1,658.54
4. Step 4: Simplify right side
   2,388.50x = 5,935,218.07
5. Step 5: Solve for x
   x = 5,935,218.07/2,388.50
6. Step 6: Final answer
   x = 2,484.91