Finding the Fourth Proportional to 1,456,413.72, 2,184,617.51 and 391,455.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456,413.72 : 2,184,617.51 = 391,455.82 : x
2. Step 2: Convert to fraction form
   1,456,413.72/2,184,617.51 = 391,455.82/x
3. Step 3: Cross multiply
   1,456,413.72x = 2,184,617.51 × 391,455.82
4. Step 4: Simplify right side
   1,456,413.72x = 855,181,231,344.59
5. Step 5: Solve for x
   x = 855,181,231,344.59/1,456,413.72
6. Step 6: Final answer
   x = 587,182.90