Finding the Fourth Proportional to 807,320, 1,114,136.16 and 449,624

Step by Step Solution

1. Step 1: Write the proportion equation
   807,320 : 1,114,136.16 = 449,624 : x
2. Step 2: Convert to fraction form
   807,320/1,114,136.16 = 449,624/x
3. Step 3: Cross multiply
   807,320x = 1,114,136.16 × 449,624
4. Step 4: Simplify right side
   807,320x = 500,942,356,803.84
5. Step 5: Solve for x
   x = 500,942,356,803.84/807,320
6. Step 6: Final answer
   x = 620,500.37