Finding the Fourth Proportional to 2,315.49, 3,195.42 and 1,811.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.49 : 3,195.42 = 1,811.94 : x
2. Step 2: Convert to fraction form
   2,315.49/3,195.42 = 1,811.94/x
3. Step 3: Cross multiply
   2,315.49x = 3,195.42 × 1,811.94
4. Step 4: Simplify right side
   2,315.49x = 5,789,909.31
5. Step 5: Solve for x
   x = 5,789,909.31/2,315.49
6. Step 6: Final answer
   x = 2,500.51