Finding the Fourth Proportional to 2,131.06, 3,199.29 and 1,808.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.06 : 3,199.29 = 1,808.41 : x
2. Step 2: Convert to fraction form
   2,131.06/3,199.29 = 1,808.41/x
3. Step 3: Cross multiply
   2,131.06x = 3,199.29 × 1,808.41
4. Step 4: Simplify right side
   2,131.06x = 5,785,628.03
5. Step 5: Solve for x
   x = 5,785,628.03/2,131.06
6. Step 6: Final answer
   x = 2,714.91