Finding the Fourth Proportional to 1,395.32, 1,925.10 and 805.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.32 : 1,925.10 = 805.76 : x
2. Step 2: Convert to fraction form
   1,395.32/1,925.10 = 805.76/x
3. Step 3: Cross multiply
   1,395.32x = 1,925.10 × 805.76
4. Step 4: Simplify right side
   1,395.32x = 1,551,168.58
5. Step 5: Solve for x
   x = 1,551,168.58/1,395.32
6. Step 6: Final answer
   x = 1,111.69