Finding the Fourth Proportional to 3,940.34, 5,911.63 and 1,308.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.34 : 5,911.63 = 1,308.10 : x
2. Step 2: Convert to fraction form
   3,940.34/5,911.63 = 1,308.10/x
3. Step 3: Cross multiply
   3,940.34x = 5,911.63 × 1,308.10
4. Step 4: Simplify right side
   3,940.34x = 7,732,967.10
5. Step 5: Solve for x
   x = 7,732,967.10/3,940.34
6. Step 6: Final answer
   x = 1,962.51