Finding the Fourth Proportional to 765,878.98, 1,057,054.72 and 443,589

Step by Step Solution

1. Step 1: Write the proportion equation
   765,878.98 : 1,057,054.72 = 443,589 : x
2. Step 2: Convert to fraction form
   765,878.98/1,057,054.72 = 443,589/x
3. Step 3: Cross multiply
   765,878.98x = 1,057,054.72 × 443,589
4. Step 4: Simplify right side
   765,878.98x = 468,897,846,190.08
5. Step 5: Solve for x
   x = 468,897,846,190.08/765,878.98
6. Step 6: Final answer
   x = 612,234.91