Finding the Fourth Proportional to 2,231.74, 3,348.96 and 1,309.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.74 : 3,348.96 = 1,309.15 : x
2. Step 2: Convert to fraction form
   2,231.74/3,348.96 = 1,309.15/x
3. Step 3: Cross multiply
   2,231.74x = 3,348.96 × 1,309.15
4. Step 4: Simplify right side
   2,231.74x = 4,384,290.98
5. Step 5: Solve for x
   x = 4,384,290.98/2,231.74
6. Step 6: Final answer
   x = 1,964.52