Finding the Fourth Proportional to 2,216.20, 3,322.59 and 1,436.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.20 : 3,322.59 = 1,436.98 : x
2. Step 2: Convert to fraction form
   2,216.20/3,322.59 = 1,436.98/x
3. Step 3: Cross multiply
   2,216.20x = 3,322.59 × 1,436.98
4. Step 4: Simplify right side
   2,216.20x = 4,774,495.38
5. Step 5: Solve for x
   x = 4,774,495.38/2,216.20
6. Step 6: Final answer
   x = 2,154.36