Finding the Fourth Proportional to 2,061.71, 2,845.16 and 1,222.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.71 : 2,845.16 = 1,222.83 : x
2. Step 2: Convert to fraction form
   2,061.71/2,845.16 = 1,222.83/x
3. Step 3: Cross multiply
   2,061.71x = 2,845.16 × 1,222.83
4. Step 4: Simplify right side
   2,061.71x = 3,479,150.06
5. Step 5: Solve for x
   x = 3,479,150.06/2,061.71
6. Step 6: Final answer
   x = 1,687.50