Finding the Fourth Proportional to 510,498.24, 704,487.60 and 284,138.88

Step by Step Solution

1. Step 1: Write the proportion equation
   510,498.24 : 704,487.60 = 284,138.88 : x
2. Step 2: Convert to fraction form
   510,498.24/704,487.60 = 284,138.88/x
3. Step 3: Cross multiply
   510,498.24x = 704,487.60 × 284,138.88
4. Step 4: Simplify right side
   510,498.24x = 200,172,317,637.89
5. Step 5: Solve for x
   x = 200,172,317,637.89/510,498.24
6. Step 6: Final answer
   x = 392,111.67