Finding the Fourth Proportional to 685,945.76, 945,768.72 and 504,104

Step by Step Solution

1. Step 1: Write the proportion equation
   685,945.76 : 945,768.72 = 504,104 : x
2. Step 2: Convert to fraction form
   685,945.76/945,768.72 = 504,104/x
3. Step 3: Cross multiply
   685,945.76x = 945,768.72 × 504,104
4. Step 4: Simplify right side
   685,945.76x = 476,765,794,826.88
5. Step 5: Solve for x
   x = 476,765,794,826.88/685,945.76
6. Step 6: Final answer
   x = 695,048.83