Finding the Fourth Proportional to 2,216.35, 3,320.88 and 1,436.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.35 : 3,320.88 = 1,436.32 : x
2. Step 2: Convert to fraction form
   2,216.35/3,320.88 = 1,436.32/x
3. Step 3: Cross multiply
   2,216.35x = 3,320.88 × 1,436.32
4. Step 4: Simplify right side
   2,216.35x = 4,769,846.36
5. Step 5: Solve for x
   x = 4,769,846.36/2,216.35
6. Step 6: Final answer
   x = 2,152.12