Finding the Fourth Proportional to 2,196.21, 3,031.43 and 1,533.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.21 : 3,031.43 = 1,533.28 : x
2. Step 2: Convert to fraction form
   2,196.21/3,031.43 = 1,533.28/x
3. Step 3: Cross multiply
   2,196.21x = 3,031.43 × 1,533.28
4. Step 4: Simplify right side
   2,196.21x = 4,648,021.43
5. Step 5: Solve for x
   x = 4,648,021.43/2,196.21
6. Step 6: Final answer
   x = 2,116.38