Finding the Fourth Proportional to 2,145.52, 3,215.46 and 1,104.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.52 : 3,215.46 = 1,104.62 : x
2. Step 2: Convert to fraction form
   2,145.52/3,215.46 = 1,104.62/x
3. Step 3: Cross multiply
   2,145.52x = 3,215.46 × 1,104.62
4. Step 4: Simplify right side
   2,145.52x = 3,551,861.43
5. Step 5: Solve for x
   x = 3,551,861.43/2,145.52
6. Step 6: Final answer
   x = 1,655.48