Finding the Fourth Proportional to 1,530.24, 2,111.85 and 867.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.24 : 2,111.85 = 867.12 : x
2. Step 2: Convert to fraction form
   1,530.24/2,111.85 = 867.12/x
3. Step 3: Cross multiply
   1,530.24x = 2,111.85 × 867.12
4. Step 4: Simplify right side
   1,530.24x = 1,831,227.37
5. Step 5: Solve for x
   x = 1,831,227.37/1,530.24
6. Step 6: Final answer
   x = 1,196.69