Finding the Fourth Proportional to 2,837.89, 4,255.38 and 1,276.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,837.89 : 4,255.38 = 1,276.57 : x
2. Step 2: Convert to fraction form
   2,837.89/4,255.38 = 1,276.57/x
3. Step 3: Cross multiply
   2,837.89x = 4,255.38 × 1,276.57
4. Step 4: Simplify right side
   2,837.89x = 5,432,280.21
5. Step 5: Solve for x
   x = 5,432,280.21/2,837.89
6. Step 6: Final answer
   x = 1,914.19