Finding the Fourth Proportional to 3,910.51, 5,864.53 and 1,277.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,910.51 : 5,864.53 = 1,277.42 : x
2. Step 2: Convert to fraction form
   3,910.51/5,864.53 = 1,277.42/x
3. Step 3: Cross multiply
   3,910.51x = 5,864.53 × 1,277.42
4. Step 4: Simplify right side
   3,910.51x = 7,491,459.78
5. Step 5: Solve for x
   x = 7,491,459.78/3,910.51
6. Step 6: Final answer
   x = 1,915.72