Finding the Fourth Proportional to 1,530.77, 2,112.12 and 867.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.77 : 2,112.12 = 867.47 : x
2. Step 2: Convert to fraction form
   1,530.77/2,112.12 = 867.47/x
3. Step 3: Cross multiply
   1,530.77x = 2,112.12 × 867.47
4. Step 4: Simplify right side
   1,530.77x = 1,832,196.40
5. Step 5: Solve for x
   x = 1,832,196.40/1,530.77
6. Step 6: Final answer
   x = 1,196.91