Finding the Fourth Proportional to 1,426.80, 1,969.58 and 961.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.80 : 1,969.58 = 961.32 : x
2. Step 2: Convert to fraction form
   1,426.80/1,969.58 = 961.32/x
3. Step 3: Cross multiply
   1,426.80x = 1,969.58 × 961.32
4. Step 4: Simplify right side
   1,426.80x = 1,893,396.65
5. Step 5: Solve for x
   x = 1,893,396.65/1,426.80
6. Step 6: Final answer
   x = 1,327.02