Finding the Fourth Proportional to 1,395.20, 1,926.90 and 1,084.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.20 : 1,926.90 = 1,084.22 : x
2. Step 2: Convert to fraction form
   1,395.20/1,926.90 = 1,084.22/x
3. Step 3: Cross multiply
   1,395.20x = 1,926.90 × 1,084.22
4. Step 4: Simplify right side
   1,395.20x = 2,089,183.52
5. Step 5: Solve for x
   x = 2,089,183.52/1,395.20
6. Step 6: Final answer
   x = 1,497.41