Finding the Fourth Proportional to 1,358.82, 1,874.57 and 961.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358.82 : 1,874.57 = 961.07 : x
2. Step 2: Convert to fraction form
   1,358.82/1,874.57 = 961.07/x
3. Step 3: Cross multiply
   1,358.82x = 1,874.57 × 961.07
4. Step 4: Simplify right side
   1,358.82x = 1,801,578.81
5. Step 5: Solve for x
   x = 1,801,578.81/1,358.82
6. Step 6: Final answer
   x = 1,325.84