Finding the Fourth Proportional to 1,150.30, 1,587.57 and 684.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.30 : 1,587.57 = 684.50 : x
2. Step 2: Convert to fraction form
   1,150.30/1,587.57 = 684.50/x
3. Step 3: Cross multiply
   1,150.30x = 1,587.57 × 684.50
4. Step 4: Simplify right side
   1,150.30x = 1,086,691.67
5. Step 5: Solve for x
   x = 1,086,691.67/1,150.30
6. Step 6: Final answer
   x = 944.70