Finding the Fourth Proportional to 2,196.12, 3,029.76 and 1,311.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.12 : 3,029.76 = 1,311.42 : x
2. Step 2: Convert to fraction form
   2,196.12/3,029.76 = 1,311.42/x
3. Step 3: Cross multiply
   2,196.12x = 3,029.76 × 1,311.42
4. Step 4: Simplify right side
   2,196.12x = 3,973,287.86
5. Step 5: Solve for x
   x = 3,973,287.86/2,196.12
6. Step 6: Final answer
   x = 1,809.23