Finding the Fourth Proportional to 1,378.24, 1,902.42 and 937.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,378.24 : 1,902.42 = 937.48 : x
2. Step 2: Convert to fraction form
   1,378.24/1,902.42 = 937.48/x
3. Step 3: Cross multiply
   1,378.24x = 1,902.42 × 937.48
4. Step 4: Simplify right side
   1,378.24x = 1,783,480.70
5. Step 5: Solve for x
   x = 1,783,480.70/1,378.24
6. Step 6: Final answer
   x = 1,294.03