Finding the Fourth Proportional to 2,300.30, 3,174.19 and 1,291.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.30 : 3,174.19 = 1,291.78 : x
2. Step 2: Convert to fraction form
   2,300.30/3,174.19 = 1,291.78/x
3. Step 3: Cross multiply
   2,300.30x = 3,174.19 × 1,291.78
4. Step 4: Simplify right side
   2,300.30x = 4,100,339.29
5. Step 5: Solve for x
   x = 4,100,339.29/2,300.30
6. Step 6: Final answer
   x = 1,782.52