Finding the Fourth Proportional to 2,904.29, 4,355.56 and 824.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,904.29 : 4,355.56 = 824.47 : x
2. Step 2: Convert to fraction form
   2,904.29/4,355.56 = 824.47/x
3. Step 3: Cross multiply
   2,904.29x = 4,355.56 × 824.47
4. Step 4: Simplify right side
   2,904.29x = 3,591,018.69
5. Step 5: Solve for x
   x = 3,591,018.69/2,904.29
6. Step 6: Final answer
   x = 1,236.45