Finding the Fourth Proportional to 2,131.12, 3,193.84 and 1,206.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.12 : 3,193.84 = 1,206.10 : x
2. Step 2: Convert to fraction form
   2,131.12/3,193.84 = 1,206.10/x
3. Step 3: Cross multiply
   2,131.12x = 3,193.84 × 1,206.10
4. Step 4: Simplify right side
   2,131.12x = 3,852,090.42
5. Step 5: Solve for x
   x = 3,852,090.42/2,131.12
6. Step 6: Final answer
   x = 1,807.54