Finding the Fourth Proportional to 2,106.50, 3,157.92 and 1,131.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.50 : 3,157.92 = 1,131.46 : x
2. Step 2: Convert to fraction form
   2,106.50/3,157.92 = 1,131.46/x
3. Step 3: Cross multiply
   2,106.50x = 3,157.92 × 1,131.46
4. Step 4: Simplify right side
   2,106.50x = 3,573,052.27
5. Step 5: Solve for x
   x = 3,573,052.27/2,106.50
6. Step 6: Final answer
   x = 1,696.21