Finding the Fourth Proportional to 1,141.92, 1,571.31 and 954.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.92 : 1,571.31 = 954.81 : x
2. Step 2: Convert to fraction form
   1,141.92/1,571.31 = 954.81/x
3. Step 3: Cross multiply
   1,141.92x = 1,571.31 × 954.81
4. Step 4: Simplify right side
   1,141.92x = 1,500,302.50
5. Step 5: Solve for x
   x = 1,500,302.50/1,141.92
6. Step 6: Final answer
   x = 1,313.84