Finding the Fourth Proportional to 2,878.62, 4,317.29 and 1,123.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,878.62 : 4,317.29 = 1,123.67 : x
2. Step 2: Convert to fraction form
   2,878.62/4,317.29 = 1,123.67/x
3. Step 3: Cross multiply
   2,878.62x = 4,317.29 × 1,123.67
4. Step 4: Simplify right side
   2,878.62x = 4,851,209.25
5. Step 5: Solve for x
   x = 4,851,209.25/2,878.62
6. Step 6: Final answer
   x = 1,685.26