Finding the Fourth Proportional to 1,359.63, 1,873.89 and 961.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.63 : 1,873.89 = 961.38 : x
2. Step 2: Convert to fraction form
   1,359.63/1,873.89 = 961.38/x
3. Step 3: Cross multiply
   1,359.63x = 1,873.89 × 961.38
4. Step 4: Simplify right side
   1,359.63x = 1,801,520.37
5. Step 5: Solve for x
   x = 1,801,520.37/1,359.63
6. Step 6: Final answer
   x = 1,325.01