Finding the Fourth Proportional to 1,530.40, 2,111.93 and 867.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.40 : 2,111.93 = 867.25 : x
2. Step 2: Convert to fraction form
   1,530.40/2,111.93 = 867.25/x
3. Step 3: Cross multiply
   1,530.40x = 2,111.93 × 867.25
4. Step 4: Simplify right side
   1,530.40x = 1,831,571.29
5. Step 5: Solve for x
   x = 1,831,571.29/1,530.40
6. Step 6: Final answer
   x = 1,196.79