Finding the Fourth Proportional to 1,467.20, 2,189.42 and 1,311.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,467.20 : 2,189.42 = 1,311.45 : x
2. Step 2: Convert to fraction form
   1,467.20/2,189.42 = 1,311.45/x
3. Step 3: Cross multiply
   1,467.20x = 2,189.42 × 1,311.45
4. Step 4: Simplify right side
   1,467.20x = 2,871,308.30
5. Step 5: Solve for x
   x = 2,871,308.30/1,467.20
6. Step 6: Final answer
   x = 1,957.01