Finding the Fourth Proportional to 2,855.59, 4,282.17 and 1,123

Step by Step Solution

1. Step 1: Write the proportion equation
   2,855.59 : 4,282.17 = 1,123 : x
2. Step 2: Convert to fraction form
   2,855.59/4,282.17 = 1,123/x
3. Step 3: Cross multiply
   2,855.59x = 4,282.17 × 1,123
4. Step 4: Simplify right side
   2,855.59x = 4,808,876.91
5. Step 5: Solve for x
   x = 4,808,876.91/2,855.59
6. Step 6: Final answer
   x = 1,684.02