Finding the Fourth Proportional to 2,131.72, 2,940.73 and 1,836.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.72 : 2,940.73 = 1,836.47 : x
2. Step 2: Convert to fraction form
   2,131.72/2,940.73 = 1,836.47/x
3. Step 3: Cross multiply
   2,131.72x = 2,940.73 × 1,836.47
4. Step 4: Simplify right side
   2,131.72x = 5,400,565.18
5. Step 5: Solve for x
   x = 5,400,565.18/2,131.72
6. Step 6: Final answer
   x = 2,533.43