Finding the Fourth Proportional to 897,264.72, 1,238,190.84 and 494,856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   897,264.72 : 1,238,190.84 = 494,856.72 : x
2. Step 2: Convert to fraction form
   897,264.72/1,238,190.84 = 494,856.72/x
3. Step 3: Cross multiply
   897,264.72x = 1,238,190.84 × 494,856.72
4. Step 4: Simplify right side
   897,264.72x = 612,727,057,816.45
5. Step 5: Solve for x
   x = 612,727,057,816.45/897,264.72
6. Step 6: Final answer
   x = 682,883.26