Finding the Fourth Proportional to 2,106, 3,157.56 and 1,284.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106 : 3,157.56 = 1,284.56 : x
2. Step 2: Convert to fraction form
   2,106/3,157.56 = 1,284.56/x
3. Step 3: Cross multiply
   2,106x = 3,157.56 × 1,284.56
4. Step 4: Simplify right side
   2,106x = 4,056,075.27
5. Step 5: Solve for x
   x = 4,056,075.27/2,106
6. Step 6: Final answer
   x = 1,925.96