Finding the Fourth Proportional to 2,781.72, 3,822.71 and 2,653.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,781.72 : 3,822.71 = 2,653.23 : x
2. Step 2: Convert to fraction form
   2,781.72/3,822.71 = 2,653.23/x
3. Step 3: Cross multiply
   2,781.72x = 3,822.71 × 2,653.23
4. Step 4: Simplify right side
   2,781.72x = 10,142,515.59
5. Step 5: Solve for x
   x = 10,142,515.59/2,781.72
6. Step 6: Final answer
   x = 3,646.13