Finding the Fourth Proportional to 2,196.17, 3,029.73 and 1,311.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.17 : 3,029.73 = 1,311.45 : x
2. Step 2: Convert to fraction form
   2,196.17/3,029.73 = 1,311.45/x
3. Step 3: Cross multiply
   2,196.17x = 3,029.73 × 1,311.45
4. Step 4: Simplify right side
   2,196.17x = 3,973,339.41
5. Step 5: Solve for x
   x = 3,973,339.41/2,196.17
6. Step 6: Final answer
   x = 1,809.21