Finding the Fourth Proportional to 1,392.15, 1,920.25 and 895.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.15 : 1,920.25 = 895.42 : x
2. Step 2: Convert to fraction form
   1,392.15/1,920.25 = 895.42/x
3. Step 3: Cross multiply
   1,392.15x = 1,920.25 × 895.42
4. Step 4: Simplify right side
   1,392.15x = 1,719,428.02
5. Step 5: Solve for x
   x = 1,719,428.02/1,392.15
6. Step 6: Final answer
   x = 1,235.09