Finding the Fourth Proportional to 2,383.57, 3,576.72 and 824.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,383.57 : 3,576.72 = 824.05 : x
2. Step 2: Convert to fraction form
   2,383.57/3,576.72 = 824.05/x
3. Step 3: Cross multiply
   2,383.57x = 3,576.72 × 824.05
4. Step 4: Simplify right side
   2,383.57x = 2,947,396.12
5. Step 5: Solve for x
   x = 2,947,396.12/2,383.57
6. Step 6: Final answer
   x = 1,236.55