Finding the Fourth Proportional to 2,145.22, 2,960.96 and 1,306.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.22 : 2,960.96 = 1,306.49 : x
2. Step 2: Convert to fraction form
   2,145.22/2,960.96 = 1,306.49/x
3. Step 3: Cross multiply
   2,145.22x = 2,960.96 × 1,306.49
4. Step 4: Simplify right side
   2,145.22x = 3,868,443.29
5. Step 5: Solve for x
   x = 3,868,443.29/2,145.22
6. Step 6: Final answer
   x = 1,803.29