Finding the Fourth Proportional to 766,078.83, 1,057,027.91 and 443,769.57

Step by Step Solution

1. Step 1: Write the proportion equation
   766,078.83 : 1,057,027.91 = 443,769.57 : x
2. Step 2: Convert to fraction form
   766,078.83/1,057,027.91 = 443,769.57/x
3. Step 3: Cross multiply
   766,078.83x = 1,057,027.91 × 443,769.57
4. Step 4: Simplify right side
   766,078.83x = 469,076,818,879.85
5. Step 5: Solve for x
   x = 469,076,818,879.85/766,078.83
6. Step 6: Final answer
   x = 612,308.81