Finding the Fourth Proportional to 2,872,139.82, 4,308,209.73 and 877,578.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,872,139.82 : 4,308,209.73 = 877,578.54 : x
2. Step 2: Convert to fraction form
   2,872,139.82/4,308,209.73 = 877,578.54/x
3. Step 3: Cross multiply
   2,872,139.82x = 4,308,209.73 × 877,578.54
4. Step 4: Simplify right side
   2,872,139.82x = 3,780,792,404,867.20
5. Step 5: Solve for x
   x = 3,780,792,404,867.20/2,872,139.82
6. Step 6: Final answer
   x = 1,316,367.81