Finding the Fourth Proportional to 1,447.37, 1,997.82 and 858.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.37 : 1,997.82 = 858.09 : x
2. Step 2: Convert to fraction form
   1,447.37/1,997.82 = 858.09/x
3. Step 3: Cross multiply
   1,447.37x = 1,997.82 × 858.09
4. Step 4: Simplify right side
   1,447.37x = 1,714,309.36
5. Step 5: Solve for x
   x = 1,714,309.36/1,447.37
6. Step 6: Final answer
   x = 1,184.43