Finding the Fourth Proportional to 2,106.36, 3,156.24 and 1,131.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.36 : 3,156.24 = 1,131.12 : x
2. Step 2: Convert to fraction form
   2,106.36/3,156.24 = 1,131.12/x
3. Step 3: Cross multiply
   2,106.36x = 3,156.24 × 1,131.12
4. Step 4: Simplify right side
   2,106.36x = 3,570,086.19
5. Step 5: Solve for x
   x = 3,570,086.19/2,106.36
6. Step 6: Final answer
   x = 1,694.91