Finding the Fourth Proportional to 2,303.59, 3,178.96 and 1,308.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,303.59 : 3,178.96 = 1,308.88 : x
2. Step 2: Convert to fraction form
   2,303.59/3,178.96 = 1,308.88/x
3. Step 3: Cross multiply
   2,303.59x = 3,178.96 × 1,308.88
4. Step 4: Simplify right side
   2,303.59x = 4,160,861.27
5. Step 5: Solve for x
   x = 4,160,861.27/2,303.59
6. Step 6: Final answer
   x = 1,806.25