Finding the Fourth Proportional to 579,798, 800,208.72 and 353,574.72

Step by Step Solution

1. Step 1: Write the proportion equation
   579,798 : 800,208.72 = 353,574.72 : x
2. Step 2: Convert to fraction form
   579,798/800,208.72 = 353,574.72/x
3. Step 3: Cross multiply
   579,798x = 800,208.72 × 353,574.72
4. Step 4: Simplify right side
   579,798x = 282,933,574,115.56
5. Step 5: Solve for x
   x = 282,933,574,115.56/579,798
6. Step 6: Final answer
   x = 487,986.46