Finding the Fourth Proportional to 2,878.73, 4,317.91 and 1,123.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,878.73 : 4,317.91 = 1,123.41 : x
2. Step 2: Convert to fraction form
   2,878.73/4,317.91 = 1,123.41/x
3. Step 3: Cross multiply
   2,878.73x = 4,317.91 × 1,123.41
4. Step 4: Simplify right side
   2,878.73x = 4,850,780.46
5. Step 5: Solve for x
   x = 4,850,780.46/2,878.73
6. Step 6: Final answer
   x = 1,685.04