Finding the Fourth Proportional to 1,395.45, 1,926.05 and 806.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.45 : 1,926.05 = 806.18 : x
2. Step 2: Convert to fraction form
   1,395.45/1,926.05 = 806.18/x
3. Step 3: Cross multiply
   1,395.45x = 1,926.05 × 806.18
4. Step 4: Simplify right side
   1,395.45x = 1,552,729.33
5. Step 5: Solve for x
   x = 1,552,729.33/1,395.45
6. Step 6: Final answer
   x = 1,112.71