Finding the Fourth Proportional to 1,407.25, 1,942.79 and 935.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.25 : 1,942.79 = 935.79 : x
2. Step 2: Convert to fraction form
   1,407.25/1,942.79 = 935.79/x
3. Step 3: Cross multiply
   1,407.25x = 1,942.79 × 935.79
4. Step 4: Simplify right side
   1,407.25x = 1,818,043.45
5. Step 5: Solve for x
   x = 1,818,043.45/1,407.25
6. Step 6: Final answer
   x = 1,291.91