Finding the Fourth Proportional to 2,346.78, 3,238.72 and 1,298.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,346.78 : 3,238.72 = 1,298.82 : x
2. Step 2: Convert to fraction form
   2,346.78/3,238.72 = 1,298.82/x
3. Step 3: Cross multiply
   2,346.78x = 3,238.72 × 1,298.82
4. Step 4: Simplify right side
   2,346.78x = 4,206,514.31
5. Step 5: Solve for x
   x = 4,206,514.31/2,346.78
6. Step 6: Final answer
   x = 1,792.46