Finding the Fourth Proportional to 2,196.60, 3,031.38 and 1,201.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.60 : 3,031.38 = 1,201.94 : x
2. Step 2: Convert to fraction form
   2,196.60/3,031.38 = 1,201.94/x
3. Step 3: Cross multiply
   2,196.60x = 3,031.38 × 1,201.94
4. Step 4: Simplify right side
   2,196.60x = 3,643,536.88
5. Step 5: Solve for x
   x = 3,643,536.88/2,196.60
6. Step 6: Final answer
   x = 1,658.72