Finding the Fourth Proportional to 2,196.38, 3,029.58 and 1,311.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.38 : 3,029.58 = 1,311.50 : x
2. Step 2: Convert to fraction form
   2,196.38/3,029.58 = 1,311.50/x
3. Step 3: Cross multiply
   2,196.38x = 3,029.58 × 1,311.50
4. Step 4: Simplify right side
   2,196.38x = 3,973,294.17
5. Step 5: Solve for x
   x = 3,973,294.17/2,196.38
6. Step 6: Final answer
   x = 1,809.02