Finding the Fourth Proportional to 2,553.30, 3,523.56 and 1,434.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,553.30 : 3,523.56 = 1,434.61 : x
2. Step 2: Convert to fraction form
   2,553.30/3,523.56 = 1,434.61/x
3. Step 3: Cross multiply
   2,553.30x = 3,523.56 × 1,434.61
4. Step 4: Simplify right side
   2,553.30x = 5,054,934.41
5. Step 5: Solve for x
   x = 5,054,934.41/2,553.30
6. Step 6: Final answer
   x = 1,979.77