Finding the Fourth Proportional to 2,196.88, 3,031.70 and 1,202.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.88 : 3,031.70 = 1,202.17 : x
2. Step 2: Convert to fraction form
   2,196.88/3,031.70 = 1,202.17/x
3. Step 3: Cross multiply
   2,196.88x = 3,031.70 × 1,202.17
4. Step 4: Simplify right side
   2,196.88x = 3,644,608.70
5. Step 5: Solve for x
   x = 3,644,608.70/2,196.88
6. Step 6: Final answer
   x = 1,658.99