Finding the Fourth Proportional to 2,315.57, 3,195.89 and 2,238.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.57 : 3,195.89 = 2,238.68 : x
2. Step 2: Convert to fraction form
   2,315.57/3,195.89 = 2,238.68/x
3. Step 3: Cross multiply
   2,315.57x = 3,195.89 × 2,238.68
4. Step 4: Simplify right side
   2,315.57x = 7,154,547.85
5. Step 5: Solve for x
   x = 7,154,547.85/2,315.57
6. Step 6: Final answer
   x = 3,089.76