Finding the Fourth Proportional to 2,143.07, 3,212.03 and 1,103.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.07 : 3,212.03 = 1,103.56 : x
2. Step 2: Convert to fraction form
   2,143.07/3,212.03 = 1,103.56/x
3. Step 3: Cross multiply
   2,143.07x = 3,212.03 × 1,103.56
4. Step 4: Simplify right side
   2,143.07x = 3,544,670.59
5. Step 5: Solve for x
   x = 3,544,670.59/2,143.07
6. Step 6: Final answer
   x = 1,654.02