Finding the Fourth Proportional to 2,678.49, 4,018.23 and 829.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,678.49 : 4,018.23 = 829.49 : x
2. Step 2: Convert to fraction form
   2,678.49/4,018.23 = 829.49/x
3. Step 3: Cross multiply
   2,678.49x = 4,018.23 × 829.49
4. Step 4: Simplify right side
   2,678.49x = 3,333,061.51
5. Step 5: Solve for x
   x = 3,333,061.51/2,678.49
6. Step 6: Final answer
   x = 1,244.38