Finding the Fourth Proportional to 2,114.40, 2,915.82 and 1,878.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.40 : 2,915.82 = 1,878.42 : x
2. Step 2: Convert to fraction form
   2,114.40/2,915.82 = 1,878.42/x
3. Step 3: Cross multiply
   2,114.40x = 2,915.82 × 1,878.42
4. Step 4: Simplify right side
   2,114.40x = 5,477,134.60
5. Step 5: Solve for x
   x = 5,477,134.60/2,114.40
6. Step 6: Final answer
   x = 2,590.40