Finding the Fourth Proportional to 2,196.21, 3,294.27 and 715.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.21 : 3,294.27 = 715.48 : x
2. Step 2: Convert to fraction form
   2,196.21/3,294.27 = 715.48/x
3. Step 3: Cross multiply
   2,196.21x = 3,294.27 × 715.48
4. Step 4: Simplify right side
   2,196.21x = 2,356,984.30
5. Step 5: Solve for x
   x = 2,356,984.30/2,196.21
6. Step 6: Final answer
   x = 1,073.21