Finding the Fourth Proportional to 510,428.56, 704,391.42 and 284,127.52

Step by Step Solution

1. Step 1: Write the proportion equation
   510,428.56 : 704,391.42 = 284,127.52 : x
2. Step 2: Convert to fraction form
   510,428.56/704,391.42 = 284,127.52/x
3. Step 3: Cross multiply
   510,428.56x = 704,391.42 × 284,127.52
4. Step 4: Simplify right side
   510,428.56x = 200,136,987,273.88
5. Step 5: Solve for x
   x = 200,136,987,273.88/510,428.56
6. Step 6: Final answer
   x = 392,095.98