Finding the Fourth Proportional to 1,447.50, 1,997.20 and 857.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.50 : 1,997.20 = 857.93 : x
2. Step 2: Convert to fraction form
   1,447.50/1,997.20 = 857.93/x
3. Step 3: Cross multiply
   1,447.50x = 1,997.20 × 857.93
4. Step 4: Simplify right side
   1,447.50x = 1,713,457.80
5. Step 5: Solve for x
   x = 1,713,457.80/1,447.50
6. Step 6: Final answer
   x = 1,183.74