Finding the Fourth Proportional to 1,150.82, 1,588.17 and 684.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.82 : 1,588.17 = 684.98 : x
2. Step 2: Convert to fraction form
   1,150.82/1,588.17 = 684.98/x
3. Step 3: Cross multiply
   1,150.82x = 1,588.17 × 684.98
4. Step 4: Simplify right side
   1,150.82x = 1,087,864.69
5. Step 5: Solve for x
   x = 1,087,864.69/1,150.82
6. Step 6: Final answer
   x = 945.30