Finding the Fourth Proportional to 682,684, 942,458.12 and 498,716

Step by Step Solution

1. Step 1: Write the proportion equation
   682,684 : 942,458.12 = 498,716 : x
2. Step 2: Convert to fraction form
   682,684/942,458.12 = 498,716/x
3. Step 3: Cross multiply
   682,684x = 942,458.12 × 498,716
4. Step 4: Simplify right side
   682,684x = 470,018,943,773.92
5. Step 5: Solve for x
   x = 470,018,943,773.92/682,684
6. Step 6: Final answer
   x = 688,486.83