Finding the Fourth Proportional to 2,196.64, 3,031.34 and 1,201.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.64 : 3,031.34 = 1,201.92 : x
2. Step 2: Convert to fraction form
   2,196.64/3,031.34 = 1,201.92/x
3. Step 3: Cross multiply
   2,196.64x = 3,031.34 × 1,201.92
4. Step 4: Simplify right side
   2,196.64x = 3,643,428.17
5. Step 5: Solve for x
   x = 3,643,428.17/2,196.64
6. Step 6: Final answer
   x = 1,658.64