Finding the Fourth Proportional to 940,707.98, 1,411,061.97 and 408,217.22

Step by Step Solution

1. Step 1: Write the proportion equation
   940,707.98 : 1,411,061.97 = 408,217.22 : x
2. Step 2: Convert to fraction form
   940,707.98/1,411,061.97 = 408,217.22/x
3. Step 3: Cross multiply
   940,707.98x = 1,411,061.97 × 408,217.22
4. Step 4: Simplify right side
   940,707.98x = 576,019,792,111.89
5. Step 5: Solve for x
   x = 576,019,792,111.89/940,707.98
6. Step 6: Final answer
   x = 612,325.83