Finding the Fourth Proportional to 2,131.42, 3,190.21 and 1,836.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.42 : 3,190.21 = 1,836.17 : x
2. Step 2: Convert to fraction form
   2,131.42/3,190.21 = 1,836.17/x
3. Step 3: Cross multiply
   2,131.42x = 3,190.21 × 1,836.17
4. Step 4: Simplify right side
   2,131.42x = 5,857,767.90
5. Step 5: Solve for x
   x = 5,857,767.90/2,131.42
6. Step 6: Final answer
   x = 2,748.29