Finding the Fourth Proportional to 1,395.52, 1,925.82 and 806.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.52 : 1,925.82 = 806.05 : x
2. Step 2: Convert to fraction form
   1,395.52/1,925.82 = 806.05/x
3. Step 3: Cross multiply
   1,395.52x = 1,925.82 × 806.05
4. Step 4: Simplify right side
   1,395.52x = 1,552,307.21
5. Step 5: Solve for x
   x = 1,552,307.21/1,395.52
6. Step 6: Final answer
   x = 1,112.35