Finding the Fourth Proportional to 1,355.04, 1,868.04 and 961.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.04 : 1,868.04 = 961.92 : x
2. Step 2: Convert to fraction form
   1,355.04/1,868.04 = 961.92/x
3. Step 3: Cross multiply
   1,355.04x = 1,868.04 × 961.92
4. Step 4: Simplify right side
   1,355.04x = 1,796,905.04
5. Step 5: Solve for x
   x = 1,796,905.04/1,355.04
6. Step 6: Final answer
   x = 1,326.09