Finding the Fourth Proportional to 2,158,413.35, 2,978,619.93 and 1,191,551.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,413.35 : 2,978,619.93 = 1,191,551.57 : x
2. Step 2: Convert to fraction form
   2,158,413.35/2,978,619.93 = 1,191,551.57/x
3. Step 3: Cross multiply
   2,158,413.35x = 2,978,619.93 × 1,191,551.57
4. Step 4: Simplify right side
   2,158,413.35x = 3,549,179,254,024.79
5. Step 5: Solve for x
   x = 3,549,179,254,024.79/2,158,413.35
6. Step 6: Final answer
   x = 1,644,346.41