Finding the Fourth Proportional to 1,392.52, 1,922.55 and 896.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392.52 : 1,922.55 = 896.02 : x
2. Step 2: Convert to fraction form
   1,392.52/1,922.55 = 896.02/x
3. Step 3: Cross multiply
   1,392.52x = 1,922.55 × 896.02
4. Step 4: Simplify right side
   1,392.52x = 1,722,637.49
5. Step 5: Solve for x
   x = 1,722,637.49/1,392.52
6. Step 6: Final answer
   x = 1,237.07