Finding the Fourth Proportional to 1,530.46, 2,112.04 and 867.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.46 : 2,112.04 = 867.31 : x
2. Step 2: Convert to fraction form
   1,530.46/2,112.04 = 867.31/x
3. Step 3: Cross multiply
   1,530.46x = 2,112.04 × 867.31
4. Step 4: Simplify right side
   1,530.46x = 1,831,789.22
5. Step 5: Solve for x
   x = 1,831,789.22/1,530.46
6. Step 6: Final answer
   x = 1,196.89