Finding the Fourth Proportional to 2,103.42, 2,903.06 and 1,605.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.42 : 2,903.06 = 1,605.12 : x
2. Step 2: Convert to fraction form
   2,103.42/2,903.06 = 1,605.12/x
3. Step 3: Cross multiply
   2,103.42x = 2,903.06 × 1,605.12
4. Step 4: Simplify right side
   2,103.42x = 4,659,759.67
5. Step 5: Solve for x
   x = 4,659,759.67/2,103.42
6. Step 6: Final answer
   x = 2,215.33