Finding the Fourth Proportional to 2,855.02, 4,284.28 and 1,123.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,855.02 : 4,284.28 = 1,123.50 : x
2. Step 2: Convert to fraction form
   2,855.02/4,284.28 = 1,123.50/x
3. Step 3: Cross multiply
   2,855.02x = 4,284.28 × 1,123.50
4. Step 4: Simplify right side
   2,855.02x = 4,813,388.58
5. Step 5: Solve for x
   x = 4,813,388.58/2,855.02
6. Step 6: Final answer
   x = 1,685.94