Finding the Fourth Proportional to 801,490, 1,106,056.20 and 443,794

Step by Step Solution

1. Step 1: Write the proportion equation
   801,490 : 1,106,056.20 = 443,794 : x
2. Step 2: Convert to fraction form
   801,490/1,106,056.20 = 443,794/x
3. Step 3: Cross multiply
   801,490x = 1,106,056.20 × 443,794
4. Step 4: Simplify right side
   801,490x = 490,861,105,222.80
5. Step 5: Solve for x
   x = 490,861,105,222.80/801,490
6. Step 6: Final answer
   x = 612,435.72