Finding the Fourth Proportional to 806,443.69, 1,112,892.22 and 438,923.46

Step by Step Solution

1. Step 1: Write the proportion equation
   806,443.69 : 1,112,892.22 = 438,923.46 : x
2. Step 2: Convert to fraction form
   806,443.69/1,112,892.22 = 438,923.46/x
3. Step 3: Cross multiply
   806,443.69x = 1,112,892.22 × 438,923.46
4. Step 4: Simplify right side
   806,443.69x = 488,474,503,809.48
5. Step 5: Solve for x
   x = 488,474,503,809.48/806,443.69
6. Step 6: Final answer
   x = 605,714.34