Finding the Fourth Proportional to 5,151.09, 7,726.69 and 1,255.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,151.09 : 7,726.69 = 1,255.50 : x
2. Step 2: Convert to fraction form
   5,151.09/7,726.69 = 1,255.50/x
3. Step 3: Cross multiply
   5,151.09x = 7,726.69 × 1,255.50
4. Step 4: Simplify right side
   5,151.09x = 9,700,860.86
5. Step 5: Solve for x
   x = 9,700,860.86/5,151.09
6. Step 6: Final answer
   x = 1,883.26