Finding the Fourth Proportional to 1,150.89, 1,588.20 and 626.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.89 : 1,588.20 = 626.91 : x
2. Step 2: Convert to fraction form
   1,150.89/1,588.20 = 626.91/x
3. Step 3: Cross multiply
   1,150.89x = 1,588.20 × 626.91
4. Step 4: Simplify right side
   1,150.89x = 995,658.46
5. Step 5: Solve for x
   x = 995,658.46/1,150.89
6. Step 6: Final answer
   x = 865.12