Finding the Fourth Proportional to 679,155.84, 1,017,333.92 and 397,820.16

Step by Step Solution

1. Step 1: Write the proportion equation
   679,155.84 : 1,017,333.92 = 397,820.16 : x
2. Step 2: Convert to fraction form
   679,155.84/1,017,333.92 = 397,820.16/x
3. Step 3: Cross multiply
   679,155.84x = 1,017,333.92 × 397,820.16
4. Step 4: Simplify right side
   679,155.84x = 404,715,942,827.83
5. Step 5: Solve for x
   x = 404,715,942,827.83/679,155.84
6. Step 6: Final answer
   x = 595,910.27