Finding the Fourth Proportional to 2,606.46, 3,910.41 and 1,308.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.46 : 3,910.41 = 1,308.66 : x
2. Step 2: Convert to fraction form
   2,606.46/3,910.41 = 1,308.66/x
3. Step 3: Cross multiply
   2,606.46x = 3,910.41 × 1,308.66
4. Step 4: Simplify right side
   2,606.46x = 5,117,397.15
5. Step 5: Solve for x
   x = 5,117,397.15/2,606.46
6. Step 6: Final answer
   x = 1,963.35