Finding the Fourth Proportional to 2,143.82, 3,213.16 and 1,104.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.82 : 3,213.16 = 1,104.32 : x
2. Step 2: Convert to fraction form
   2,143.82/3,213.16 = 1,104.32/x
3. Step 3: Cross multiply
   2,143.82x = 3,213.16 × 1,104.32
4. Step 4: Simplify right side
   2,143.82x = 3,548,338.02
5. Step 5: Solve for x
   x = 3,548,338.02/2,143.82
6. Step 6: Final answer
   x = 1,655.15