Finding the Fourth Proportional to 510,689.50, 704,756.37 and 284,339.86

Step by Step Solution

1. Step 1: Write the proportion equation
   510,689.50 : 704,756.37 = 284,339.86 : x
2. Step 2: Convert to fraction form
   510,689.50/704,756.37 = 284,339.86/x
3. Step 3: Cross multiply
   510,689.50x = 704,756.37 × 284,339.86
4. Step 4: Simplify right side
   510,689.50x = 200,390,327,579.91
5. Step 5: Solve for x
   x = 200,390,327,579.91/510,689.50
6. Step 6: Final answer
   x = 392,391.71