Finding the Fourth Proportional to 2,553.41, 3,523.91 and 1,434.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.41 : 3,523.91 = 1,434.40 : x
2. Step 2: Convert to fraction form
   2,553.41/3,523.91 = 1,434.40/x
3. Step 3: Cross multiply
   2,553.41x = 3,523.91 × 1,434.40
4. Step 4: Simplify right side
   2,553.41x = 5,054,680.52
5. Step 5: Solve for x
   x = 5,054,680.52/2,553.41
6. Step 6: Final answer
   x = 1,979.58