Finding the Fourth Proportional to 1,447.52, 1,997.52 and 858.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.52 : 1,997.52 = 858.40 : x
2. Step 2: Convert to fraction form
   1,447.52/1,997.52 = 858.40/x
3. Step 3: Cross multiply
   1,447.52x = 1,997.52 × 858.40
4. Step 4: Simplify right side
   1,447.52x = 1,714,671.17
5. Step 5: Solve for x
   x = 1,714,671.17/1,447.52
6. Step 6: Final answer
   x = 1,184.56