Finding the Fourth Proportional to 2,643.42, 3,963.27 and 1,161.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.42 : 3,963.27 = 1,161.93 : x
2. Step 2: Convert to fraction form
   2,643.42/3,963.27 = 1,161.93/x
3. Step 3: Cross multiply
   2,643.42x = 3,963.27 × 1,161.93
4. Step 4: Simplify right side
   2,643.42x = 4,605,042.31
5. Step 5: Solve for x
   x = 4,605,042.31/2,643.42
6. Step 6: Final answer
   x = 1,742.08