Finding the Fourth Proportional to 2,106.60, 3,158.34 and 1,066.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.60 : 3,158.34 = 1,066.11 : x
2. Step 2: Convert to fraction form
   2,106.60/3,158.34 = 1,066.11/x
3. Step 3: Cross multiply
   2,106.60x = 3,158.34 × 1,066.11
4. Step 4: Simplify right side
   2,106.60x = 3,367,137.86
5. Step 5: Solve for x
   x = 3,367,137.86/2,106.60
6. Step 6: Final answer
   x = 1,598.38