Finding the Fourth Proportional to 2,863.55, 4,296.24 and 1,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,863.55 : 4,296.24 = 1,221.50 : x
2. Step 2: Convert to fraction form
   2,863.55/4,296.24 = 1,221.50/x
3. Step 3: Cross multiply
   2,863.55x = 4,296.24 × 1,221.50
4. Step 4: Simplify right side
   2,863.55x = 5,247,835.68
5. Step 5: Solve for x
   x = 5,247,835.68/2,863.55
6. Step 6: Final answer
   x = 1,832.64