Finding the Fourth Proportional to 510,929.94, 765,086.36 and 426,480.15

Step by Step Solution

1. Step 1: Write the proportion equation
   510,929.94 : 765,086.36 = 426,480.15 : x
2. Step 2: Convert to fraction form
   510,929.94/765,086.36 = 426,480.15/x
3. Step 3: Cross multiply
   510,929.94x = 765,086.36 × 426,480.15
4. Step 4: Simplify right side
   510,929.94x = 326,294,143,443.35
5. Step 5: Solve for x
   x = 326,294,143,443.35/510,929.94
6. Step 6: Final answer
   x = 638,627.96