Finding the Fourth Proportional to 2,333.52, 3,220.24 and 1,285.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,333.52 : 3,220.24 = 1,285.60 : x
2. Step 2: Convert to fraction form
   2,333.52/3,220.24 = 1,285.60/x
3. Step 3: Cross multiply
   2,333.52x = 3,220.24 × 1,285.60
4. Step 4: Simplify right side
   2,333.52x = 4,139,940.54
5. Step 5: Solve for x
   x = 4,139,940.54/2,333.52
6. Step 6: Final answer
   x = 1,774.12