Finding the Fourth Proportional to 1,123,962.65, 1,685,500.18 and 449,918.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,962.65 : 1,685,500.18 = 449,918.31 : x
2. Step 2: Convert to fraction form
   1,123,962.65/1,685,500.18 = 449,918.31/x
3. Step 3: Cross multiply
   1,123,962.65x = 1,685,500.18 × 449,918.31
4. Step 4: Simplify right side
   1,123,962.65x = 758,337,391,365.50
5. Step 5: Solve for x
   x = 758,337,391,365.50/1,123,962.65
6. Step 6: Final answer
   x = 674,699.82