Finding the Fourth Proportional to 2,219,413.23, 3,061,918.82 and 1,288,962.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219,413.23 : 3,061,918.82 = 1,288,962.60 : x
2. Step 2: Convert to fraction form
   2,219,413.23/3,061,918.82 = 1,288,962.60/x
3. Step 3: Cross multiply
   2,219,413.23x = 3,061,918.82 × 1,288,962.60
4. Step 4: Simplify right side
   2,219,413.23x = 3,946,698,829,234.78
5. Step 5: Solve for x
   x = 3,946,698,829,234.78/2,219,413.23
6. Step 6: Final answer
   x = 1,778,262.28