Finding the Fourth Proportional to 2,353.90, 3,248.43 and 1,291.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,353.90 : 3,248.43 = 1,291.71 : x
2. Step 2: Convert to fraction form
   2,353.90/3,248.43 = 1,291.71/x
3. Step 3: Cross multiply
   2,353.90x = 3,248.43 × 1,291.71
4. Step 4: Simplify right side
   2,353.90x = 4,196,029.52
5. Step 5: Solve for x
   x = 4,196,029.52/2,353.90
6. Step 6: Final answer
   x = 1,782.59