Finding the Fourth Proportional to 764,108.55, 1,144,665.34 and 443,588.61

Step by Step Solution

1. Step 1: Write the proportion equation
   764,108.55 : 1,144,665.34 = 443,588.61 : x
2. Step 2: Convert to fraction form
   764,108.55/1,144,665.34 = 443,588.61/x
3. Step 3: Cross multiply
   764,108.55x = 1,144,665.34 × 443,588.61
4. Step 4: Simplify right side
   764,108.55x = 507,760,510,269.30
5. Step 5: Solve for x
   x = 507,760,510,269.30/764,108.55
6. Step 6: Final answer
   x = 664,513.58