Finding the Fourth Proportional to 713,720, 984,933.60 and 395,768

Step by Step Solution

1. Step 1: Write the proportion equation
   713,720 : 984,933.60 = 395,768 : x
2. Step 2: Convert to fraction form
   713,720/984,933.60 = 395,768/x
3. Step 3: Cross multiply
   713,720x = 984,933.60 × 395,768
4. Step 4: Simplify right side
   713,720x = 389,805,201,004.80
5. Step 5: Solve for x
   x = 389,805,201,004.80/713,720
6. Step 6: Final answer
   x = 546,159.84