Finding the Fourth Proportional to 1,072,323.50, 1,479,436.43 and 685,365.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072,323.50 : 1,479,436.43 = 685,365.39 : x
2. Step 2: Convert to fraction form
   1,072,323.50/1,479,436.43 = 685,365.39/x
3. Step 3: Cross multiply
   1,072,323.50x = 1,479,436.43 × 685,365.39
4. Step 4: Simplify right side
   1,072,323.50x = 1,013,954,522,400.33
5. Step 5: Solve for x
   x = 1,013,954,522,400.33/1,072,323.50
6. Step 6: Final answer
   x = 945,567.76