Finding the Fourth Proportional to 897,105.38, 1,238,005.42 and 494,697.38

Step by Step Solution

1. Step 1: Write the proportion equation
   897,105.38 : 1,238,005.42 = 494,697.38 : x
2. Step 2: Convert to fraction form
   897,105.38/1,238,005.42 = 494,697.38/x
3. Step 3: Cross multiply
   897,105.38x = 1,238,005.42 × 494,697.38
4. Step 4: Simplify right side
   897,105.38x = 612,438,030,273.03
5. Step 5: Solve for x
   x = 612,438,030,273.03/897,105.38
6. Step 6: Final answer
   x = 682,682.38