Finding the Fourth Proportional to 1,395.54, 1,925.61 and 805.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.54 : 1,925.61 = 805.95 : x
2. Step 2: Convert to fraction form
   1,395.54/1,925.61 = 805.95/x
3. Step 3: Cross multiply
   1,395.54x = 1,925.61 × 805.95
4. Step 4: Simplify right side
   1,395.54x = 1,551,945.38
5. Step 5: Solve for x
   x = 1,551,945.38/1,395.54
6. Step 6: Final answer
   x = 1,112.08