Finding the Fourth Proportional to 1,548.72, 2,323.35 and 855.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,548.72 : 2,323.35 = 855.36 : x
2. Step 2: Convert to fraction form
   1,548.72/2,323.35 = 855.36/x
3. Step 3: Cross multiply
   1,548.72x = 2,323.35 × 855.36
4. Step 4: Simplify right side
   1,548.72x = 1,987,300.66
5. Step 5: Solve for x
   x = 1,987,300.66/1,548.72
6. Step 6: Final answer
   x = 1,283.19