Finding the Fourth Proportional to 1,559.00, 2,151.27 and 886.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,559.00 : 2,151.27 = 886.79 : x
2. Step 2: Convert to fraction form
   1,559.00/2,151.27 = 886.79/x
3. Step 3: Cross multiply
   1,559.00x = 2,151.27 × 886.79
4. Step 4: Simplify right side
   1,559.00x = 1,907,713.97
5. Step 5: Solve for x
   x = 1,907,713.97/1,559.00
6. Step 6: Final answer
   x = 1,223.68