Finding the Fourth Proportional to 1,150.96, 1,588.46 and 678.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.96 : 1,588.46 = 678.96 : x
2. Step 2: Convert to fraction form
   1,150.96/1,588.46 = 678.96/x
3. Step 3: Cross multiply
   1,150.96x = 1,588.46 × 678.96
4. Step 4: Simplify right side
   1,150.96x = 1,078,500.80
5. Step 5: Solve for x
   x = 1,078,500.80/1,150.96
6. Step 6: Final answer
   x = 937.04