Finding the Fourth Proportional to 2,371.46, 3,272.55 and 1,309.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,371.46 : 3,272.55 = 1,309.30 : x
2. Step 2: Convert to fraction form
   2,371.46/3,272.55 = 1,309.30/x
3. Step 3: Cross multiply
   2,371.46x = 3,272.55 × 1,309.30
4. Step 4: Simplify right side
   2,371.46x = 4,284,736.62
5. Step 5: Solve for x
   x = 4,284,736.62/2,371.46
6. Step 6: Final answer
   x = 1,806.80