Finding the Fourth Proportional to 1,817.56, 2,722.82 and 949.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,817.56 : 2,722.82 = 949.78 : x
2. Step 2: Convert to fraction form
   1,817.56/2,722.82 = 949.78/x
3. Step 3: Cross multiply
   1,817.56x = 2,722.82 × 949.78
4. Step 4: Simplify right side
   1,817.56x = 2,586,079.98
5. Step 5: Solve for x
   x = 2,586,079.98/1,817.56
6. Step 6: Final answer
   x = 1,422.83