Finding the Fourth Proportional to 2,578.48, 3,557.04 and 1,530.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.48 : 3,557.04 = 1,530.04 : x
2. Step 2: Convert to fraction form
   2,578.48/3,557.04 = 1,530.04/x
3. Step 3: Cross multiply
   2,578.48x = 3,557.04 × 1,530.04
4. Step 4: Simplify right side
   2,578.48x = 5,442,413.48
5. Step 5: Solve for x
   x = 5,442,413.48/2,578.48
6. Step 6: Final answer
   x = 2,110.71