Finding the Fourth Proportional to 2,196.70, 3,031.40 and 1,201.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.70 : 3,031.40 = 1,201.95 : x
2. Step 2: Convert to fraction form
   2,196.70/3,031.40 = 1,201.95/x
3. Step 3: Cross multiply
   2,196.70x = 3,031.40 × 1,201.95
4. Step 4: Simplify right side
   2,196.70x = 3,643,594.23
5. Step 5: Solve for x
   x = 3,643,594.23/2,196.70
6. Step 6: Final answer
   x = 1,658.67