Finding the Fourth Proportional to 2,106.12, 3,156.94 and 1,066.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.12 : 3,156.94 = 1,066.88 : x
2. Step 2: Convert to fraction form
   2,106.12/3,156.94 = 1,066.88/x
3. Step 3: Cross multiply
   2,106.12x = 3,156.94 × 1,066.88
4. Step 4: Simplify right side
   2,106.12x = 3,368,076.15
5. Step 5: Solve for x
   x = 3,368,076.15/2,106.12
6. Step 6: Final answer
   x = 1,599.19