Finding the Fourth Proportional to 897,510.89, 1,238,565.02 and 489,614.37

Step by Step Solution

1. Step 1: Write the proportion equation
   897,510.89 : 1,238,565.02 = 489,614.37 : x
2. Step 2: Convert to fraction form
   897,510.89/1,238,565.02 = 489,614.37/x
3. Step 3: Cross multiply
   897,510.89x = 1,238,565.02 × 489,614.37
4. Step 4: Simplify right side
   897,510.89x = 606,419,229,523.27
5. Step 5: Solve for x
   x = 606,419,229,523.27/897,510.89
6. Step 6: Final answer
   x = 675,667.83