Finding the Fourth Proportional to 806,476.72, 1,112,929.06 and 443,892.80

Step by Step Solution

1. Step 1: Write the proportion equation
   806,476.72 : 1,112,929.06 = 443,892.80 : x
2. Step 2: Convert to fraction form
   806,476.72/1,112,929.06 = 443,892.80/x
3. Step 3: Cross multiply
   806,476.72x = 1,112,929.06 × 443,892.80
4. Step 4: Simplify right side
   806,476.72x = 494,021,196,644.77
5. Step 5: Solve for x
   x = 494,021,196,644.77/806,476.72
6. Step 6: Final answer
   x = 612,567.21