Finding the Fourth Proportional to 2,291.10, 3,161.55 and 1,296.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,291.10 : 3,161.55 = 1,296.48 : x
2. Step 2: Convert to fraction form
   2,291.10/3,161.55 = 1,296.48/x
3. Step 3: Cross multiply
   2,291.10x = 3,161.55 × 1,296.48
4. Step 4: Simplify right side
   2,291.10x = 4,098,886.34
5. Step 5: Solve for x
   x = 4,098,886.34/2,291.10
6. Step 6: Final answer
   x = 1,789.05