Finding the Fourth Proportional to 2,288.34, 3,157.91 and 1,240.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.34 : 3,157.91 = 1,240.41 : x
2. Step 2: Convert to fraction form
   2,288.34/3,157.91 = 1,240.41/x
3. Step 3: Cross multiply
   2,288.34x = 3,157.91 × 1,240.41
4. Step 4: Simplify right side
   2,288.34x = 3,917,103.14
5. Step 5: Solve for x
   x = 3,917,103.14/2,288.34
6. Step 6: Final answer
   x = 1,711.77