Finding the Fourth Proportional to 2,607.81, 3,911.25 and 1,291.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.81 : 3,911.25 = 1,291.14 : x
2. Step 2: Convert to fraction form
   2,607.81/3,911.25 = 1,291.14/x
3. Step 3: Cross multiply
   2,607.81x = 3,911.25 × 1,291.14
4. Step 4: Simplify right side
   2,607.81x = 5,049,971.33
5. Step 5: Solve for x
   x = 5,049,971.33/2,607.81
6. Step 6: Final answer
   x = 1,936.48