Finding the Fourth Proportional to 528,411.50, 792,150.68 and 404,306.54

Step by Step Solution

1. Step 1: Write the proportion equation
   528,411.50 : 792,150.68 = 404,306.54 : x
2. Step 2: Convert to fraction form
   528,411.50/792,150.68 = 404,306.54/x
3. Step 3: Cross multiply
   528,411.50x = 792,150.68 × 404,306.54
4. Step 4: Simplify right side
   528,411.50x = 320,271,700,589.45
5. Step 5: Solve for x
   x = 320,271,700,589.45/528,411.50
6. Step 6: Final answer
   x = 606,102.82