Finding the Fourth Proportional to 2,255.49, 3,112.25 and 1,298.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.49 : 3,112.25 = 1,298.34 : x
2. Step 2: Convert to fraction form
   2,255.49/3,112.25 = 1,298.34/x
3. Step 3: Cross multiply
   2,255.49x = 3,112.25 × 1,298.34
4. Step 4: Simplify right side
   2,255.49x = 4,040,752.17
5. Step 5: Solve for x
   x = 4,040,752.17/2,255.49
6. Step 6: Final answer
   x = 1,791.52