Finding the Fourth Proportional to 1,447.83, 1,997.87 and 858.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.83 : 1,997.87 = 858.29 : x
2. Step 2: Convert to fraction form
   1,447.83/1,997.87 = 858.29/x
3. Step 3: Cross multiply
   1,447.83x = 1,997.87 × 858.29
4. Step 4: Simplify right side
   1,447.83x = 1,714,737.56
5. Step 5: Solve for x
   x = 1,714,737.56/1,447.83
6. Step 6: Final answer
   x = 1,184.35