Finding the Fourth Proportional to 1,395.10, 1,924.95 and 805.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.10 : 1,924.95 = 805.24 : x
2. Step 2: Convert to fraction form
   1,395.10/1,924.95 = 805.24/x
3. Step 3: Cross multiply
   1,395.10x = 1,924.95 × 805.24
4. Step 4: Simplify right side
   1,395.10x = 1,550,046.74
5. Step 5: Solve for x
   x = 1,550,046.74/1,395.10
6. Step 6: Final answer
   x = 1,111.06