Finding the Fourth Proportional to 2,111.50, 2,911.14 and 1,447.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.50 : 2,911.14 = 1,447.17 : x
2. Step 2: Convert to fraction form
   2,111.50/2,911.14 = 1,447.17/x
3. Step 3: Cross multiply
   2,111.50x = 2,911.14 × 1,447.17
4. Step 4: Simplify right side
   2,111.50x = 4,212,914.47
5. Step 5: Solve for x
   x = 4,212,914.47/2,111.50
6. Step 6: Final answer
   x = 1,995.22