Finding the Fourth Proportional to 2,238.75, 3,089.48 and 1,399.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.75 : 3,089.48 = 1,399.94 : x
2. Step 2: Convert to fraction form
   2,238.75/3,089.48 = 1,399.94/x
3. Step 3: Cross multiply
   2,238.75x = 3,089.48 × 1,399.94
4. Step 4: Simplify right side
   2,238.75x = 4,325,090.48
5. Step 5: Solve for x
   x = 4,325,090.48/2,238.75
6. Step 6: Final answer
   x = 1,931.93