Finding the Fourth Proportional to 709,074.54, 978,498.63 and 422,589.42

Step by Step Solution

1. Step 1: Write the proportion equation
   709,074.54 : 978,498.63 = 422,589.42 : x
2. Step 2: Convert to fraction form
   709,074.54/978,498.63 = 422,589.42/x
3. Step 3: Cross multiply
   709,074.54x = 978,498.63 × 422,589.42
4. Step 4: Simplify right side
   709,074.54x = 413,503,168,522.50
5. Step 5: Solve for x
   x = 413,503,168,522.50/709,074.54
6. Step 6: Final answer
   x = 583,158.96