Finding the Fourth Proportional to 2,321.82, 3,483.05 and 860.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.82 : 3,483.05 = 860.85 : x
2. Step 2: Convert to fraction form
   2,321.82/3,483.05 = 860.85/x
3. Step 3: Cross multiply
   2,321.82x = 3,483.05 × 860.85
4. Step 4: Simplify right side
   2,321.82x = 2,998,383.59
5. Step 5: Solve for x
   x = 2,998,383.59/2,321.82
6. Step 6: Final answer
   x = 1,291.39