Finding the Fourth Proportional to 2,196.57, 3,031.17 and 1,201.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.57 : 3,031.17 = 1,201.81 : x
2. Step 2: Convert to fraction form
   2,196.57/3,031.17 = 1,201.81/x
3. Step 3: Cross multiply
   2,196.57x = 3,031.17 × 1,201.81
4. Step 4: Simplify right side
   2,196.57x = 3,642,890.42
5. Step 5: Solve for x
   x = 3,642,890.42/2,196.57
6. Step 6: Final answer
   x = 1,658.44