Finding the Fourth Proportional to 2,303.40, 3,179.14 and 1,308.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,303.40 : 3,179.14 = 1,308.72 : x
2. Step 2: Convert to fraction form
   2,303.40/3,179.14 = 1,308.72/x
3. Step 3: Cross multiply
   2,303.40x = 3,179.14 × 1,308.72
4. Step 4: Simplify right side
   2,303.40x = 4,160,604.10
5. Step 5: Solve for x
   x = 4,160,604.10/2,303.40
6. Step 6: Final answer
   x = 1,806.29