Finding the Fourth Proportional to 713,924.89, 985,153.59 and 407,940.50

Step by Step Solution

1. Step 1: Write the proportion equation
   713,924.89 : 985,153.59 = 407,940.50 : x
2. Step 2: Convert to fraction form
   713,924.89/985,153.59 = 407,940.50/x
3. Step 3: Cross multiply
   713,924.89x = 985,153.59 × 407,940.50
4. Step 4: Simplify right side
   713,924.89x = 401,884,050,544.28
5. Step 5: Solve for x
   x = 401,884,050,544.28/713,924.89
6. Step 6: Final answer
   x = 562,922.04