Finding the Fourth Proportional to 2,689.42, 4,031.24 and 1,300.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,689.42 : 4,031.24 = 1,300.84 : x
2. Step 2: Convert to fraction form
   2,689.42/4,031.24 = 1,300.84/x
3. Step 3: Cross multiply
   2,689.42x = 4,031.24 × 1,300.84
4. Step 4: Simplify right side
   2,689.42x = 5,244,004.76
5. Step 5: Solve for x
   x = 5,244,004.76/2,689.42
6. Step 6: Final answer
   x = 1,949.87