Finding the Fourth Proportional to 2,817.19, 4,222.86 and 1,061.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,817.19 : 4,222.86 = 1,061.85 : x
2. Step 2: Convert to fraction form
   2,817.19/4,222.86 = 1,061.85/x
3. Step 3: Cross multiply
   2,817.19x = 4,222.86 × 1,061.85
4. Step 4: Simplify right side
   2,817.19x = 4,484,043.89
5. Step 5: Solve for x
   x = 4,484,043.89/2,817.19
6. Step 6: Final answer
   x = 1,591.67