Finding the Fourth Proportional to 2,784.28, 3,841.98 and 1,605.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.28 : 3,841.98 = 1,605.40 : x
2. Step 2: Convert to fraction form
   2,784.28/3,841.98 = 1,605.40/x
3. Step 3: Cross multiply
   2,784.28x = 3,841.98 × 1,605.40
4. Step 4: Simplify right side
   2,784.28x = 6,167,914.69
5. Step 5: Solve for x
   x = 6,167,914.69/2,784.28
6. Step 6: Final answer
   x = 2,215.26