Finding the Fourth Proportional to 2,131.16, 2,940.79 and 1,571.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.16 : 2,940.79 = 1,571.93 : x
2. Step 2: Convert to fraction form
   2,131.16/2,940.79 = 1,571.93/x
3. Step 3: Cross multiply
   2,131.16x = 2,940.79 × 1,571.93
4. Step 4: Simplify right side
   2,131.16x = 4,622,716.02
5. Step 5: Solve for x
   x = 4,622,716.02/2,131.16
6. Step 6: Final answer
   x = 2,169.11