Finding the Fourth Proportional to 2,842.82, 3,921.59 and 1,957.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,842.82 : 3,921.59 = 1,957.09 : x
2. Step 2: Convert to fraction form
   2,842.82/3,921.59 = 1,957.09/x
3. Step 3: Cross multiply
   2,842.82x = 3,921.59 × 1,957.09
4. Step 4: Simplify right side
   2,842.82x = 7,674,904.57
5. Step 5: Solve for x
   x = 7,674,904.57/2,842.82
6. Step 6: Final answer
   x = 2,699.75