Finding the Fourth Proportional to 2,389.59, 3,583.08 and 829.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.59 : 3,583.08 = 829.47 : x
2. Step 2: Convert to fraction form
   2,389.59/3,583.08 = 829.47/x
3. Step 3: Cross multiply
   2,389.59x = 3,583.08 × 829.47
4. Step 4: Simplify right side
   2,389.59x = 2,972,057.37
5. Step 5: Solve for x
   x = 2,972,057.37/2,389.59
6. Step 6: Final answer
   x = 1,243.75