Finding the Fourth Proportional to 1,123,834.72, 1,685,471.46 and 440,860.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,834.72 : 1,685,471.46 = 440,860.38 : x
2. Step 2: Convert to fraction form
   1,123,834.72/1,685,471.46 = 440,860.38/x
3. Step 3: Cross multiply
   1,123,834.72x = 1,685,471.46 × 440,860.38
4. Step 4: Simplify right side
   1,123,834.72x = 743,057,588,334.76
5. Step 5: Solve for x
   x = 743,057,588,334.76/1,123,834.72
6. Step 6: Final answer
   x = 661,180.49