Finding the Fourth Proportional to 2,303.12, 3,178.38 and 1,308.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,303.12 : 3,178.38 = 1,308.38 : x
2. Step 2: Convert to fraction form
   2,303.12/3,178.38 = 1,308.38/x
3. Step 3: Cross multiply
   2,303.12x = 3,178.38 × 1,308.38
4. Step 4: Simplify right side
   2,303.12x = 4,158,528.82
5. Step 5: Solve for x
   x = 4,158,528.82/2,303.12
6. Step 6: Final answer
   x = 1,805.61