Finding the Fourth Proportional to 946,140.72, 1,419,837.89 and 519,974.16

Step by Step Solution

1. Step 1: Write the proportion equation
   946,140.72 : 1,419,837.89 = 519,974.16 : x
2. Step 2: Convert to fraction form
   946,140.72/1,419,837.89 = 519,974.16/x
3. Step 3: Cross multiply
   946,140.72x = 1,419,837.89 × 519,974.16
4. Step 4: Simplify right side
   946,140.72x = 738,279,014,188.92
5. Step 5: Solve for x
   x = 738,279,014,188.92/946,140.72
6. Step 6: Final answer
   x = 780,305.72