Finding the Fourth Proportional to 2,291.91, 3,162.78 and 1,297.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.91 : 3,162.78 = 1,297.02 : x
2. Step 2: Convert to fraction form
   2,291.91/3,162.78 = 1,297.02/x
3. Step 3: Cross multiply
   2,291.91x = 3,162.78 × 1,297.02
4. Step 4: Simplify right side
   2,291.91x = 4,102,200.78
5. Step 5: Solve for x
   x = 4,102,200.78/2,291.91
6. Step 6: Final answer
   x = 1,789.86