Finding the Fourth Proportional to 940.69, 1,409.41 and 844.30

Step by Step Solution

1. Step 1: Write the proportion equation
   940.69 : 1,409.41 = 844.30 : x
2. Step 2: Convert to fraction form
   940.69/1,409.41 = 844.30/x
3. Step 3: Cross multiply
   940.69x = 1,409.41 × 844.30
4. Step 4: Simplify right side
   940.69x = 1,189,964.86
5. Step 5: Solve for x
   x = 1,189,964.86/940.69
6. Step 6: Final answer
   x = 1,264.99