Finding the Fourth Proportional to 2,309.46, 3,187.24 and 1,315.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.46 : 3,187.24 = 1,315.04 : x
2. Step 2: Convert to fraction form
   2,309.46/3,187.24 = 1,315.04/x
3. Step 3: Cross multiply
   2,309.46x = 3,187.24 × 1,315.04
4. Step 4: Simplify right side
   2,309.46x = 4,191,348.09
5. Step 5: Solve for x
   x = 4,191,348.09/2,309.46
6. Step 6: Final answer
   x = 1,814.86