Finding the Fourth Proportional to 2,878.37, 4,316.91 and 1,123.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,878.37 : 4,316.91 = 1,123.42 : x
2. Step 2: Convert to fraction form
   2,878.37/4,316.91 = 1,123.42/x
3. Step 3: Cross multiply
   2,878.37x = 4,316.91 × 1,123.42
4. Step 4: Simplify right side
   2,878.37x = 4,849,703.03
5. Step 5: Solve for x
   x = 4,849,703.03/2,878.37
6. Step 6: Final answer
   x = 1,684.88