Finding the Fourth Proportional to 3,986,413.61, 5,980,572.83 and 1,290,741.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986,413.61 : 5,980,572.83 = 1,290,741.71 : x
2. Step 2: Convert to fraction form
   3,986,413.61/5,980,572.83 = 1,290,741.71/x
3. Step 3: Cross multiply
   3,986,413.61x = 5,980,572.83 × 1,290,741.71
4. Step 4: Simplify right side
   3,986,413.61x = 7,719,374,774,697.73
5. Step 5: Solve for x
   x = 7,719,374,774,697.73/3,986,413.61
6. Step 6: Final answer
   x = 1,936,420.94