Finding the Fourth Proportional to 2,279.92, 3,417.49 and 1,291.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.92 : 3,417.49 = 1,291.50 : x
2. Step 2: Convert to fraction form
   2,279.92/3,417.49 = 1,291.50/x
3. Step 3: Cross multiply
   2,279.92x = 3,417.49 × 1,291.50
4. Step 4: Simplify right side
   2,279.92x = 4,413,688.34
5. Step 5: Solve for x
   x = 4,413,688.34/2,279.92
6. Step 6: Final answer
   x = 1,935.90