Finding the Fourth Proportional to 2,191.38, 3,284.82 and 873.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.38 : 3,284.82 = 873.30 : x
2. Step 2: Convert to fraction form
   2,191.38/3,284.82 = 873.30/x
3. Step 3: Cross multiply
   2,191.38x = 3,284.82 × 873.30
4. Step 4: Simplify right side
   2,191.38x = 2,868,633.31
5. Step 5: Solve for x
   x = 2,868,633.31/2,191.38
6. Step 6: Final answer
   x = 1,309.05