Finding the Fourth Proportional to 602,196.56, 828,945.42 and 520,487.54

Step by Step Solution

1. Step 1: Write the proportion equation
   602,196.56 : 828,945.42 = 520,487.54 : x
2. Step 2: Convert to fraction form
   602,196.56/828,945.42 = 520,487.54/x
3. Step 3: Cross multiply
   602,196.56x = 828,945.42 × 520,487.54
4. Step 4: Simplify right side
   602,196.56x = 431,455,762,450.07
5. Step 5: Solve for x
   x = 431,455,762,450.07/602,196.56
6. Step 6: Final answer
   x = 716,469.99