Finding the Fourth Proportional to 1,530.15, 2,111.67 and 867.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.15 : 2,111.67 = 867.02 : x
2. Step 2: Convert to fraction form
   1,530.15/2,111.67 = 867.02/x
3. Step 3: Cross multiply
   1,530.15x = 2,111.67 × 867.02
4. Step 4: Simplify right side
   1,530.15x = 1,830,849.57
5. Step 5: Solve for x
   x = 1,830,849.57/1,530.15
6. Step 6: Final answer
   x = 1,196.52