Finding the Fourth Proportional to 2,216.85, 3,321.63 and 1,436.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.85 : 3,321.63 = 1,436.82 : x
2. Step 2: Convert to fraction form
   2,216.85/3,321.63 = 1,436.82/x
3. Step 3: Cross multiply
   2,216.85x = 3,321.63 × 1,436.82
4. Step 4: Simplify right side
   2,216.85x = 4,772,584.42
5. Step 5: Solve for x
   x = 4,772,584.42/2,216.85
6. Step 6: Final answer
   x = 2,152.87