Finding the Fourth Proportional to 1,388.94, 1,914.75 and 946.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388.94 : 1,914.75 = 946.27 : x
2. Step 2: Convert to fraction form
   1,388.94/1,914.75 = 946.27/x
3. Step 3: Cross multiply
   1,388.94x = 1,914.75 × 946.27
4. Step 4: Simplify right side
   1,388.94x = 1,811,872.88
5. Step 5: Solve for x
   x = 1,811,872.88/1,388.94
6. Step 6: Final answer
   x = 1,304.50