Finding the Fourth Proportional to 1,395.12, 1,925.69 and 806.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.12 : 1,925.69 = 806.07 : x
2. Step 2: Convert to fraction form
   1,395.12/1,925.69 = 806.07/x
3. Step 3: Cross multiply
   1,395.12x = 1,925.69 × 806.07
4. Step 4: Simplify right side
   1,395.12x = 1,552,238.92
5. Step 5: Solve for x
   x = 1,552,238.92/1,395.12
6. Step 6: Final answer
   x = 1,112.62