Finding the Fourth Proportional to 897,131.58, 1,238,057.91 and 489,238.26

Step by Step Solution

1. Step 1: Write the proportion equation
   897,131.58 : 1,238,057.91 = 489,238.26 : x
2. Step 2: Convert to fraction form
   897,131.58/1,238,057.91 = 489,238.26/x
3. Step 3: Cross multiply
   897,131.58x = 1,238,057.91 × 489,238.26
4. Step 4: Simplify right side
   897,131.58x = 605,705,297,667.64
5. Step 5: Solve for x
   x = 605,705,297,667.64/897,131.58
6. Step 6: Final answer
   x = 675,157.70