Finding the Fourth Proportional to 2,196.73, 3,031.79 and 1,239.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.73 : 3,031.79 = 1,239.84 : x
2. Step 2: Convert to fraction form
   2,196.73/3,031.79 = 1,239.84/x
3. Step 3: Cross multiply
   2,196.73x = 3,031.79 × 1,239.84
4. Step 4: Simplify right side
   2,196.73x = 3,758,913.16
5. Step 5: Solve for x
   x = 3,758,913.16/2,196.73
6. Step 6: Final answer
   x = 1,711.14