Finding the Fourth Proportional to 1,150.13, 1,587.31 and 684.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.13 : 1,587.31 = 684.38 : x
2. Step 2: Convert to fraction form
   1,150.13/1,587.31 = 684.38/x
3. Step 3: Cross multiply
   1,150.13x = 1,587.31 × 684.38
4. Step 4: Simplify right side
   1,150.13x = 1,086,323.22
5. Step 5: Solve for x
   x = 1,086,323.22/1,150.13
6. Step 6: Final answer
   x = 944.52