Finding the Fourth Proportional to 2,061.77, 2,845.25 and 1,222.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.77 : 2,845.25 = 1,222.89 : x
2. Step 2: Convert to fraction form
   2,061.77/2,845.25 = 1,222.89/x
3. Step 3: Cross multiply
   2,061.77x = 2,845.25 × 1,222.89
4. Step 4: Simplify right side
   2,061.77x = 3,479,427.77
5. Step 5: Solve for x
   x = 3,479,427.77/2,061.77
6. Step 6: Final answer
   x = 1,687.59