Finding the Fourth Proportional to 2,147.31, 2,963.48 and 1,263.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.31 : 2,963.48 = 1,263.65 : x
2. Step 2: Convert to fraction form
   2,147.31/2,963.48 = 1,263.65/x
3. Step 3: Cross multiply
   2,147.31x = 2,963.48 × 1,263.65
4. Step 4: Simplify right side
   2,147.31x = 3,744,780.37
5. Step 5: Solve for x
   x = 3,744,780.37/2,147.31
6. Step 6: Final answer
   x = 1,743.94