Finding the Fourth Proportional to 1,150.76, 1,588.04 and 626.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.76 : 1,588.04 = 626.78 : x
2. Step 2: Convert to fraction form
   1,150.76/1,588.04 = 626.78/x
3. Step 3: Cross multiply
   1,150.76x = 1,588.04 × 626.78
4. Step 4: Simplify right side
   1,150.76x = 995,351.71
5. Step 5: Solve for x
   x = 995,351.71/1,150.76
6. Step 6: Final answer
   x = 864.95