Finding the Fourth Proportional to 2,292.78, 3,163.86 and 1,298.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,292.78 : 3,163.86 = 1,298.10 : x
2. Step 2: Convert to fraction form
   2,292.78/3,163.86 = 1,298.10/x
3. Step 3: Cross multiply
   2,292.78x = 3,163.86 × 1,298.10
4. Step 4: Simplify right side
   2,292.78x = 4,107,006.67
5. Step 5: Solve for x
   x = 4,107,006.67/2,292.78
6. Step 6: Final answer
   x = 1,791.28