Finding the Fourth Proportional to 2,311.20, 3,188.12 and 1,470.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.20 : 3,188.12 = 1,470.42 : x
2. Step 2: Convert to fraction form
   2,311.20/3,188.12 = 1,470.42/x
3. Step 3: Cross multiply
   2,311.20x = 3,188.12 × 1,470.42
4. Step 4: Simplify right side
   2,311.20x = 4,687,868.06
5. Step 5: Solve for x
   x = 4,687,868.06/2,311.20
6. Step 6: Final answer
   x = 2,028.33