Finding the Fourth Proportional to 1,392.81, 1,921.59 and 895.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.81 : 1,921.59 = 895.74 : x
2. Step 2: Convert to fraction form
   1,392.81/1,921.59 = 895.74/x
3. Step 3: Cross multiply
   1,392.81x = 1,921.59 × 895.74
4. Step 4: Simplify right side
   1,392.81x = 1,721,237.82
5. Step 5: Solve for x
   x = 1,721,237.82/1,392.81
6. Step 6: Final answer
   x = 1,235.81