Finding the Fourth Proportional to 1,395.27, 1,925.48 and 805.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.27 : 1,925.48 = 805.81 : x
2. Step 2: Convert to fraction form
   1,395.27/1,925.48 = 805.81/x
3. Step 3: Cross multiply
   1,395.27x = 1,925.48 × 805.81
4. Step 4: Simplify right side
   1,395.27x = 1,551,562.20
5. Step 5: Solve for x
   x = 1,551,562.20/1,395.27
6. Step 6: Final answer
   x = 1,112.02