Finding the Fourth Proportional to 2,111.24, 2,913.64 and 1,448.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.24 : 2,913.64 = 1,448.40 : x
2. Step 2: Convert to fraction form
   2,111.24/2,913.64 = 1,448.40/x
3. Step 3: Cross multiply
   2,111.24x = 2,913.64 × 1,448.40
4. Step 4: Simplify right side
   2,111.24x = 4,220,116.18
5. Step 5: Solve for x
   x = 4,220,116.18/2,111.24
6. Step 6: Final answer
   x = 1,998.88