Finding the Fourth Proportional to 1,150.94, 1,588.34 and 685.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.94 : 1,588.34 = 685.46 : x
2. Step 2: Convert to fraction form
   1,150.94/1,588.34 = 685.46/x
3. Step 3: Cross multiply
   1,150.94x = 1,588.34 × 685.46
4. Step 4: Simplify right side
   1,150.94x = 1,088,743.54
5. Step 5: Solve for x
   x = 1,088,743.54/1,150.94
6. Step 6: Final answer
   x = 945.96