Finding the Fourth Proportional to 1,141.83, 1,574.24 and 931.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.83 : 1,574.24 = 931.23 : x
2. Step 2: Convert to fraction form
   1,141.83/1,574.24 = 931.23/x
3. Step 3: Cross multiply
   1,141.83x = 1,574.24 × 931.23
4. Step 4: Simplify right side
   1,141.83x = 1,465,974.86
5. Step 5: Solve for x
   x = 1,465,974.86/1,141.83
6. Step 6: Final answer
   x = 1,283.88