Finding the Fourth Proportional to 2,842.72, 3,923.15 and 1,648.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,842.72 : 3,923.15 = 1,648.07 : x
2. Step 2: Convert to fraction form
   2,842.72/3,923.15 = 1,648.07/x
3. Step 3: Cross multiply
   2,842.72x = 3,923.15 × 1,648.07
4. Step 4: Simplify right side
   2,842.72x = 6,465,625.82
5. Step 5: Solve for x
   x = 6,465,625.82/2,842.72
6. Step 6: Final answer
   x = 2,274.45