Finding the Fourth Proportional to 2,553.60, 3,524.16 and 1,434.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.60 : 3,524.16 = 1,434.48 : x
2. Step 2: Convert to fraction form
   2,553.60/3,524.16 = 1,434.48/x
3. Step 3: Cross multiply
   2,553.60x = 3,524.16 × 1,434.48
4. Step 4: Simplify right side
   2,553.60x = 5,055,337.04
5. Step 5: Solve for x
   x = 5,055,337.04/2,553.60
6. Step 6: Final answer
   x = 1,979.69