Finding the Fourth Proportional to 796,320, 1,098,921.60 and 438,624

Step by Step Solution

1. Step 1: Write the proportion equation
   796,320 : 1,098,921.60 = 438,624 : x
2. Step 2: Convert to fraction form
   796,320/1,098,921.60 = 438,624/x
3. Step 3: Cross multiply
   796,320x = 1,098,921.60 × 438,624
4. Step 4: Simplify right side
   796,320x = 482,013,387,878.40
5. Step 5: Solve for x
   x = 482,013,387,878.40/796,320
6. Step 6: Final answer
   x = 605,301.12