Finding the Fourth Proportional to 1,558.98, 2,151.03 and 886.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.98 : 2,151.03 = 886.82 : x
2. Step 2: Convert to fraction form
   1,558.98/2,151.03 = 886.82/x
3. Step 3: Cross multiply
   1,558.98x = 2,151.03 × 886.82
4. Step 4: Simplify right side
   1,558.98x = 1,907,565.67
5. Step 5: Solve for x
   x = 1,907,565.67/1,558.98
6. Step 6: Final answer
   x = 1,223.60