Finding the Fourth Proportional to 2,303.32, 3,178.79 and 1,308.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,303.32 : 3,178.79 = 1,308.91 : x
2. Step 2: Convert to fraction form
   2,303.32/3,178.79 = 1,308.91/x
3. Step 3: Cross multiply
   2,303.32x = 3,178.79 × 1,308.91
4. Step 4: Simplify right side
   2,303.32x = 4,160,750.02
5. Step 5: Solve for x
   x = 4,160,750.02/2,303.32
6. Step 6: Final answer
   x = 1,806.41