Finding the Fourth Proportional to 941.34, 1,401.47 and 936.78

Step by Step Solution

1. Step 1: Write the proportion equation
   941.34 : 1,401.47 = 936.78 : x
2. Step 2: Convert to fraction form
   941.34/1,401.47 = 936.78/x
3. Step 3: Cross multiply
   941.34x = 1,401.47 × 936.78
4. Step 4: Simplify right side
   941.34x = 1,312,864.38
5. Step 5: Solve for x
   x = 1,312,864.38/941.34
6. Step 6: Final answer
   x = 1,394.68