Finding the Fourth Proportional to 2,144.32, 3,215.52 and 1,104.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.32 : 3,215.52 = 1,104.90 : x
2. Step 2: Convert to fraction form
   2,144.32/3,215.52 = 1,104.90/x
3. Step 3: Cross multiply
   2,144.32x = 3,215.52 × 1,104.90
4. Step 4: Simplify right side
   2,144.32x = 3,552,828.05
5. Step 5: Solve for x
   x = 3,552,828.05/2,144.32
6. Step 6: Final answer
   x = 1,656.86