Finding the Fourth Proportional to 2,784.72, 3,842.72 and 1,605.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.72 : 3,842.72 = 1,605.84 : x
2. Step 2: Convert to fraction form
   2,784.72/3,842.72 = 1,605.84/x
3. Step 3: Cross multiply
   2,784.72x = 3,842.72 × 1,605.84
4. Step 4: Simplify right side
   2,784.72x = 6,170,793.48
5. Step 5: Solve for x
   x = 6,170,793.48/2,784.72
6. Step 6: Final answer
   x = 2,215.95