Finding the Fourth Proportional to 1,530.85, 2,112.56 and 867.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.85 : 2,112.56 = 867.83 : x
2. Step 2: Convert to fraction form
   1,530.85/2,112.56 = 867.83/x
3. Step 3: Cross multiply
   1,530.85x = 2,112.56 × 867.83
4. Step 4: Simplify right side
   1,530.85x = 1,833,342.94
5. Step 5: Solve for x
   x = 1,833,342.94/1,530.85
6. Step 6: Final answer
   x = 1,197.60