Finding the Fourth Proportional to 1,391.24, 1,922.00 and 913.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391.24 : 1,922.00 = 913.83 : x
2. Step 2: Convert to fraction form
   1,391.24/1,922.00 = 913.83/x
3. Step 3: Cross multiply
   1,391.24x = 1,922.00 × 913.83
4. Step 4: Simplify right side
   1,391.24x = 1,756,369.48
5. Step 5: Solve for x
   x = 1,756,369.48/1,391.24
6. Step 6: Final answer
   x = 1,262.45