Finding the Fourth Proportional to 1,393.94, 1,923.58 and 834.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.94 : 1,923.58 = 834.09 : x
2. Step 2: Convert to fraction form
   1,393.94/1,923.58 = 834.09/x
3. Step 3: Cross multiply
   1,393.94x = 1,923.58 × 834.09
4. Step 4: Simplify right side
   1,393.94x = 1,604,438.84
5. Step 5: Solve for x
   x = 1,604,438.84/1,393.94
6. Step 6: Final answer
   x = 1,151.01