Finding the Fourth Proportional to 2,182.78, 3,012.27 and 1,298.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.78 : 3,012.27 = 1,298.56 : x
2. Step 2: Convert to fraction form
   2,182.78/3,012.27 = 1,298.56/x
3. Step 3: Cross multiply
   2,182.78x = 3,012.27 × 1,298.56
4. Step 4: Simplify right side
   2,182.78x = 3,911,613.33
5. Step 5: Solve for x
   x = 3,911,613.33/2,182.78
6. Step 6: Final answer
   x = 1,792.03