Finding the Fourth Proportional to 1,150.35, 1,587.50 and 626.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.35 : 1,587.50 = 626.39 : x
2. Step 2: Convert to fraction form
   1,150.35/1,587.50 = 626.39/x
3. Step 3: Cross multiply
   1,150.35x = 1,587.50 × 626.39
4. Step 4: Simplify right side
   1,150.35x = 994,383.06
5. Step 5: Solve for x
   x = 994,383.06/1,150.35
6. Step 6: Final answer
   x = 864.42