Finding the Fourth Proportional to 2,742.57, 3,781.92 and 1,945.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,742.57 : 3,781.92 = 1,945.53 : x
2. Step 2: Convert to fraction form
   2,742.57/3,781.92 = 1,945.53/x
3. Step 3: Cross multiply
   2,742.57x = 3,781.92 × 1,945.53
4. Step 4: Simplify right side
   2,742.57x = 7,357,838.82
5. Step 5: Solve for x
   x = 7,357,838.82/2,742.57
6. Step 6: Final answer
   x = 2,682.83