Finding the Fourth Proportional to 4,385.59, 6,578.33 and 1,098.67

Step by Step Solution

1. Step 1: Write the proportion equation
   4,385.59 : 6,578.33 = 1,098.67 : x
2. Step 2: Convert to fraction form
   4,385.59/6,578.33 = 1,098.67/x
3. Step 3: Cross multiply
   4,385.59x = 6,578.33 × 1,098.67
4. Step 4: Simplify right side
   4,385.59x = 7,227,413.82
5. Step 5: Solve for x
   x = 7,227,413.82/4,385.59
6. Step 6: Final answer
   x = 1,647.99