Finding the Fourth Proportional to 2,288.01, 3,157.46 and 1,240.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.01 : 3,157.46 = 1,240.07 : x
2. Step 2: Convert to fraction form
   2,288.01/3,157.46 = 1,240.07/x
3. Step 3: Cross multiply
   2,288.01x = 3,157.46 × 1,240.07
4. Step 4: Simplify right side
   2,288.01x = 3,915,468.36
5. Step 5: Solve for x
   x = 3,915,468.36/2,288.01
6. Step 6: Final answer
   x = 1,711.30