Finding the Fourth Proportional to 683,086.50, 1,024,760.97 and 309,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   683,086.50 : 1,024,760.97 = 309,109.50 : x
2. Step 2: Convert to fraction form
   683,086.50/1,024,760.97 = 309,109.50/x
3. Step 3: Cross multiply
   683,086.50x = 1,024,760.97 × 309,109.50
4. Step 4: Simplify right side
   683,086.50x = 316,763,351,056.22
5. Step 5: Solve for x
   x = 316,763,351,056.22/683,086.50
6. Step 6: Final answer
   x = 463,723.63