Finding the Fourth Proportional to 2,911.71, 4,365.07 and 1,267

Step by Step Solution

1. Step 1: Write the proportion equation
   2,911.71 : 4,365.07 = 1,267 : x
2. Step 2: Convert to fraction form
   2,911.71/4,365.07 = 1,267/x
3. Step 3: Cross multiply
   2,911.71x = 4,365.07 × 1,267
4. Step 4: Simplify right side
   2,911.71x = 5,530,543.69
5. Step 5: Solve for x
   x = 5,530,543.69/2,911.71
6. Step 6: Final answer
   x = 1,899.41