Finding the Fourth Proportional to 2,196.86, 3,031.61 and 1,202.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.86 : 3,031.61 = 1,202.13 : x
2. Step 2: Convert to fraction form
   2,196.86/3,031.61 = 1,202.13/x
3. Step 3: Cross multiply
   2,196.86x = 3,031.61 × 1,202.13
4. Step 4: Simplify right side
   2,196.86x = 3,644,383.32
5. Step 5: Solve for x
   x = 3,644,383.32/2,196.86
6. Step 6: Final answer
   x = 1,658.91