Finding the Fourth Proportional to 1,407.96, 1,942.49 and 936.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.96 : 1,942.49 = 936.74 : x
2. Step 2: Convert to fraction form
   1,407.96/1,942.49 = 936.74/x
3. Step 3: Cross multiply
   1,407.96x = 1,942.49 × 936.74
4. Step 4: Simplify right side
   1,407.96x = 1,819,593.69
5. Step 5: Solve for x
   x = 1,819,593.69/1,407.96
6. Step 6: Final answer
   x = 1,292.36