Finding the Fourth Proportional to 2,371.25, 3,272.54 and 1,309.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,371.25 : 3,272.54 = 1,309.20 : x
2. Step 2: Convert to fraction form
   2,371.25/3,272.54 = 1,309.20/x
3. Step 3: Cross multiply
   2,371.25x = 3,272.54 × 1,309.20
4. Step 4: Simplify right side
   2,371.25x = 4,284,402.82
5. Step 5: Solve for x
   x = 4,284,402.82/2,371.25
6. Step 6: Final answer
   x = 1,806.82