Finding the Fourth Proportional to 2,128,413.74, 3,189,848.25 and 864,764.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,413.74 : 3,189,848.25 = 864,764.06 : x
2. Step 2: Convert to fraction form
   2,128,413.74/3,189,848.25 = 864,764.06/x
3. Step 3: Cross multiply
   2,128,413.74x = 3,189,848.25 × 864,764.06
4. Step 4: Simplify right side
   2,128,413.74x = 2,758,466,123,453.90
5. Step 5: Solve for x
   x = 2,758,466,123,453.90/2,128,413.74
6. Step 6: Final answer
   x = 1,296,019.69