Finding the Fourth Proportional to 2,166.35, 2,987.55 and 1,447.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166.35 : 2,987.55 = 1,447.27 : x
2. Step 2: Convert to fraction form
   2,166.35/2,987.55 = 1,447.27/x
3. Step 3: Cross multiply
   2,166.35x = 2,987.55 × 1,447.27
4. Step 4: Simplify right side
   2,166.35x = 4,323,784.02
5. Step 5: Solve for x
   x = 4,323,784.02/2,166.35
6. Step 6: Final answer
   x = 1,995.89