Finding the Fourth Proportional to 1,344.22, 2,012.37 and 1,311.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.22 : 2,012.37 = 1,311.10 : x
2. Step 2: Convert to fraction form
   1,344.22/2,012.37 = 1,311.10/x
3. Step 3: Cross multiply
   1,344.22x = 2,012.37 × 1,311.10
4. Step 4: Simplify right side
   1,344.22x = 2,638,418.31
5. Step 5: Solve for x
   x = 2,638,418.31/1,344.22
6. Step 6: Final answer
   x = 1,962.79