Finding the Fourth Proportional to 2,838.89, 4,256.88 and 1,277.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,838.89 : 4,256.88 = 1,277.57 : x
2. Step 2: Convert to fraction form
   2,838.89/4,256.88 = 1,277.57/x
3. Step 3: Cross multiply
   2,838.89x = 4,256.88 × 1,277.57
4. Step 4: Simplify right side
   2,838.89x = 5,438,462.18
5. Step 5: Solve for x
   x = 5,438,462.18/2,838.89
6. Step 6: Final answer
   x = 1,915.70