Finding the Fourth Proportional to 2,285.55, 3,427.61 and 824.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,285.55 : 3,427.61 = 824.51 : x
2. Step 2: Convert to fraction form
   2,285.55/3,427.61 = 824.51/x
3. Step 3: Cross multiply
   2,285.55x = 3,427.61 × 824.51
4. Step 4: Simplify right side
   2,285.55x = 2,826,098.72
5. Step 5: Solve for x
   x = 2,826,098.72/2,285.55
6. Step 6: Final answer
   x = 1,236.51