Finding the Fourth Proportional to 805,609.18, 1,111,769.22 and 443,061.07

Step by Step Solution

1. Step 1: Write the proportion equation
   805,609.18 : 1,111,769.22 = 443,061.07 : x
2. Step 2: Convert to fraction form
   805,609.18/1,111,769.22 = 443,061.07/x
3. Step 3: Cross multiply
   805,609.18x = 1,111,769.22 × 443,061.07
4. Step 4: Simplify right side
   805,609.18x = 492,581,660,206.27
5. Step 5: Solve for x
   x = 492,581,660,206.27/805,609.18
6. Step 6: Final answer
   x = 611,439.98