Finding the Fourth Proportional to 2,296.30, 3,169.04 and 1,288.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,296.30 : 3,169.04 = 1,288.10 : x
2. Step 2: Convert to fraction form
   2,296.30/3,169.04 = 1,288.10/x
3. Step 3: Cross multiply
   2,296.30x = 3,169.04 × 1,288.10
4. Step 4: Simplify right side
   2,296.30x = 4,082,040.42
5. Step 5: Solve for x
   x = 4,082,040.42/2,296.30
6. Step 6: Final answer
   x = 1,777.66