Finding the Fourth Proportional to 2,297.30, 3,170.42 and 1,289.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,297.30 : 3,170.42 = 1,289.10 : x
2. Step 2: Convert to fraction form
   2,297.30/3,170.42 = 1,289.10/x
3. Step 3: Cross multiply
   2,297.30x = 3,170.42 × 1,289.10
4. Step 4: Simplify right side
   2,297.30x = 4,086,988.42
5. Step 5: Solve for x
   x = 4,086,988.42/2,297.30
6. Step 6: Final answer
   x = 1,779.04