Finding the Fourth Proportional to 2,288.05, 3,157.50 and 1,240.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.05 : 3,157.50 = 1,240.11 : x
2. Step 2: Convert to fraction form
   2,288.05/3,157.50 = 1,240.11/x
3. Step 3: Cross multiply
   2,288.05x = 3,157.50 × 1,240.11
4. Step 4: Simplify right side
   2,288.05x = 3,915,647.33
5. Step 5: Solve for x
   x = 3,915,647.33/2,288.05
6. Step 6: Final answer
   x = 1,711.35