Finding the Fourth Proportional to 2,303.09, 3,178.32 and 1,308.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,303.09 : 3,178.32 = 1,308.30 : x
2. Step 2: Convert to fraction form
   2,303.09/3,178.32 = 1,308.30/x
3. Step 3: Cross multiply
   2,303.09x = 3,178.32 × 1,308.30
4. Step 4: Simplify right side
   2,303.09x = 4,158,196.06
5. Step 5: Solve for x
   x = 4,158,196.06/2,303.09
6. Step 6: Final answer
   x = 1,805.49