Finding the Fourth Proportional to 510,861.32, 705,010.49 and 284,506.82

Step by Step Solution

1. Step 1: Write the proportion equation
   510,861.32 : 705,010.49 = 284,506.82 : x
2. Step 2: Convert to fraction form
   510,861.32/705,010.49 = 284,506.82/x
3. Step 3: Cross multiply
   510,861.32x = 705,010.49 × 284,506.82
4. Step 4: Simplify right side
   510,861.32x = 200,580,287,628.96
5. Step 5: Solve for x
   x = 200,580,287,628.96/510,861.32
6. Step 6: Final answer
   x = 392,631.58