Finding the Fourth Proportional to 908,413.58, 1,362,831.42 and 309,379.94

Step by Step Solution

1. Step 1: Write the proportion equation
   908,413.58 : 1,362,831.42 = 309,379.94 : x
2. Step 2: Convert to fraction form
   908,413.58/1,362,831.42 = 309,379.94/x
3. Step 3: Cross multiply
   908,413.58x = 1,362,831.42 × 309,379.94
4. Step 4: Simplify right side
   908,413.58x = 421,632,702,949.72
5. Step 5: Solve for x
   x = 421,632,702,949.72/908,413.58
6. Step 6: Final answer
   x = 464,141.79