Finding the Fourth Proportional to 805,644.15, 1,111,766.76 and 443,068.03

Step by Step Solution

1. Step 1: Write the proportion equation
   805,644.15 : 1,111,766.76 = 443,068.03 : x
2. Step 2: Convert to fraction form
   805,644.15/1,111,766.76 = 443,068.03/x
3. Step 3: Cross multiply
   805,644.15x = 1,111,766.76 × 443,068.03
4. Step 4: Simplify right side
   805,644.15x = 492,588,308,172.68
5. Step 5: Solve for x
   x = 492,588,308,172.68/805,644.15
6. Step 6: Final answer
   x = 611,421.69