Finding the Fourth Proportional to 2,553.05, 3,523.30 and 1,434.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.05 : 3,523.30 = 1,434.20 : x
2. Step 2: Convert to fraction form
   2,553.05/3,523.30 = 1,434.20/x
3. Step 3: Cross multiply
   2,553.05x = 3,523.30 × 1,434.20
4. Step 4: Simplify right side
   2,553.05x = 5,053,095.66
5. Step 5: Solve for x
   x = 5,053,095.66/2,553.05
6. Step 6: Final answer
   x = 1,979.24