Finding the Fourth Proportional to 1,393.65, 1,922.22 and 1,061.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.65 : 1,922.22 = 1,061.28 : x
2. Step 2: Convert to fraction form
   1,393.65/1,922.22 = 1,061.28/x
3. Step 3: Cross multiply
   1,393.65x = 1,922.22 × 1,061.28
4. Step 4: Simplify right side
   1,393.65x = 2,040,013.64
5. Step 5: Solve for x
   x = 2,040,013.64/1,393.65
6. Step 6: Final answer
   x = 1,463.79