Finding the Fourth Proportional to 777,291.27, 1,072,738.46 and 454,981.83

Step by Step Solution

1. Step 1: Write the proportion equation
   777,291.27 : 1,072,738.46 = 454,981.83 : x
2. Step 2: Convert to fraction form
   777,291.27/1,072,738.46 = 454,981.83/x
3. Step 3: Cross multiply
   777,291.27x = 1,072,738.46 × 454,981.83
4. Step 4: Simplify right side
   777,291.27x = 488,076,505,367.27
5. Step 5: Solve for x
   x = 488,076,505,367.27/777,291.27
6. Step 6: Final answer
   x = 627,919.71