Finding the Fourth Proportional to 2,131.59, 2,940.55 and 1,836.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.59 : 2,940.55 = 1,836.35 : x
2. Step 2: Convert to fraction form
   2,131.59/2,940.55 = 1,836.35/x
3. Step 3: Cross multiply
   2,131.59x = 2,940.55 × 1,836.35
4. Step 4: Simplify right side
   2,131.59x = 5,399,878.99
5. Step 5: Solve for x
   x = 5,399,878.99/2,131.59
6. Step 6: Final answer
   x = 2,533.26