Finding the Fourth Proportional to 1,530.36, 2,111.72 and 867.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.36 : 2,111.72 = 867.08 : x
2. Step 2: Convert to fraction form
   1,530.36/2,111.72 = 867.08/x
3. Step 3: Cross multiply
   1,530.36x = 2,111.72 × 867.08
4. Step 4: Simplify right side
   1,530.36x = 1,831,030.18
5. Step 5: Solve for x
   x = 1,831,030.18/1,530.36
6. Step 6: Final answer
   x = 1,196.47