Finding the Fourth Proportional to 2,828.44, 4,243.47 and 854.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,828.44 : 4,243.47 = 854.00 : x
2. Step 2: Convert to fraction form
   2,828.44/4,243.47 = 854.00/x
3. Step 3: Cross multiply
   2,828.44x = 4,243.47 × 854.00
4. Step 4: Simplify right side
   2,828.44x = 3,623,897.89
5. Step 5: Solve for x
   x = 3,623,897.89/2,828.44
6. Step 6: Final answer
   x = 1,281.24