Finding the Fourth Proportional to 827,769, 1,240,614.72 and 353,897.40

Step by Step Solution

1. Step 1: Write the proportion equation
   827,769 : 1,240,614.72 = 353,897.40 : x
2. Step 2: Convert to fraction form
   827,769/1,240,614.72 = 353,897.40/x
3. Step 3: Cross multiply
   827,769x = 1,240,614.72 × 353,897.40
4. Step 4: Simplify right side
   827,769x = 439,050,323,809.73
5. Step 5: Solve for x
   x = 439,050,323,809.73/827,769
6. Step 6: Final answer
   x = 530,401.99