Finding the Fourth Proportional to 2,103.74, 2,903.49 and 1,605.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.74 : 2,903.49 = 1,605.43 : x
2. Step 2: Convert to fraction form
   2,103.74/2,903.49 = 1,605.43/x
3. Step 3: Cross multiply
   2,103.74x = 2,903.49 × 1,605.43
4. Step 4: Simplify right side
   2,103.74x = 4,661,342.69
5. Step 5: Solve for x
   x = 4,661,342.69/2,103.74
6. Step 6: Final answer
   x = 2,215.75