Finding the Fourth Proportional to 2,606.34, 3,908.78 and 1,307.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.34 : 3,908.78 = 1,307.46 : x
2. Step 2: Convert to fraction form
   2,606.34/3,908.78 = 1,307.46/x
3. Step 3: Cross multiply
   2,606.34x = 3,908.78 × 1,307.46
4. Step 4: Simplify right side
   2,606.34x = 5,110,573.50
5. Step 5: Solve for x
   x = 5,110,573.50/2,606.34
6. Step 6: Final answer
   x = 1,960.82