Finding the Fourth Proportional to 2,553.78, 3,524.08 and 1,434.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.78 : 3,524.08 = 1,434.76 : x
2. Step 2: Convert to fraction form
   2,553.78/3,524.08 = 1,434.76/x
3. Step 3: Cross multiply
   2,553.78x = 3,524.08 × 1,434.76
4. Step 4: Simplify right side
   2,553.78x = 5,056,201.85
5. Step 5: Solve for x
   x = 5,056,201.85/2,553.78
6. Step 6: Final answer
   x = 1,979.89