Finding the Fourth Proportional to 2,254.78, 3,111.74 and 1,310.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,254.78 : 3,111.74 = 1,310.59 : x
2. Step 2: Convert to fraction form
   2,254.78/3,111.74 = 1,310.59/x
3. Step 3: Cross multiply
   2,254.78x = 3,111.74 × 1,310.59
4. Step 4: Simplify right side
   2,254.78x = 4,078,215.33
5. Step 5: Solve for x
   x = 4,078,215.33/2,254.78
6. Step 6: Final answer
   x = 1,808.70