Finding the Fourth Proportional to 897,328.69, 1,238,313.69 and 494,920.69

Step by Step Solution

1. Step 1: Write the proportion equation
   897,328.69 : 1,238,313.69 = 494,920.69 : x
2. Step 2: Convert to fraction form
   897,328.69/1,238,313.69 = 494,920.69/x
3. Step 3: Cross multiply
   897,328.69x = 1,238,313.69 × 494,920.69
4. Step 4: Simplify right side
   897,328.69x = 612,867,062,795.46
5. Step 5: Solve for x
   x = 612,867,062,795.46/897,328.69
6. Step 6: Final answer
   x = 682,990.60