Finding the Fourth Proportional to 1,530.42, 2,111.80 and 867.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.42 : 2,111.80 = 867.26 : x
2. Step 2: Convert to fraction form
   1,530.42/2,111.80 = 867.26/x
3. Step 3: Cross multiply
   1,530.42x = 2,111.80 × 867.26
4. Step 4: Simplify right side
   1,530.42x = 1,831,479.67
5. Step 5: Solve for x
   x = 1,831,479.67/1,530.42
6. Step 6: Final answer
   x = 1,196.72