Finding the Fourth Proportional to 2,489.94, 3,434.68 and 1,556.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,489.94 : 3,434.68 = 1,556.82 : x
2. Step 2: Convert to fraction form
   2,489.94/3,434.68 = 1,556.82/x
3. Step 3: Cross multiply
   2,489.94x = 3,434.68 × 1,556.82
4. Step 4: Simplify right side
   2,489.94x = 5,347,178.52
5. Step 5: Solve for x
   x = 5,347,178.52/2,489.94
6. Step 6: Final answer
   x = 2,147.51