Finding the Fourth Proportional to 1,395.04, 1,925.06 and 805.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.04 : 1,925.06 = 805.54 : x
2. Step 2: Convert to fraction form
   1,395.04/1,925.06 = 805.54/x
3. Step 3: Cross multiply
   1,395.04x = 1,925.06 × 805.54
4. Step 4: Simplify right side
   1,395.04x = 1,550,712.83
5. Step 5: Solve for x
   x = 1,550,712.83/1,395.04
6. Step 6: Final answer
   x = 1,111.59