Finding the Fourth Proportional to 1,530.24, 2,111.70 and 867.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.24 : 2,111.70 = 867.30 : x
2. Step 2: Convert to fraction form
   1,530.24/2,111.70 = 867.30/x
3. Step 3: Cross multiply
   1,530.24x = 2,111.70 × 867.30
4. Step 4: Simplify right side
   1,530.24x = 1,831,477.41
5. Step 5: Solve for x
   x = 1,831,477.41/1,530.24
6. Step 6: Final answer
   x = 1,196.86