Finding the Fourth Proportional to 2,158.12, 3,234.04 and 1,170.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.12 : 3,234.04 = 1,170.10 : x
2. Step 2: Convert to fraction form
   2,158.12/3,234.04 = 1,170.10/x
3. Step 3: Cross multiply
   2,158.12x = 3,234.04 × 1,170.10
4. Step 4: Simplify right side
   2,158.12x = 3,784,150.20
5. Step 5: Solve for x
   x = 3,784,150.20/2,158.12
6. Step 6: Final answer
   x = 1,753.45