Finding the Fourth Proportional to 2,748,061.78, 4,122,127.73 and 726,288.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,748,061.78 : 4,122,127.73 = 726,288.21 : x
2. Step 2: Convert to fraction form
   2,748,061.78/4,122,127.73 = 726,288.21/x
3. Step 3: Cross multiply
   2,748,061.78x = 4,122,127.73 × 726,288.21
4. Step 4: Simplify right side
   2,748,061.78x = 2,993,852,770,413.06
5. Step 5: Solve for x
   x = 2,993,852,770,413.06/2,748,061.78
6. Step 6: Final answer
   x = 1,089,441.58