Finding the Fourth Proportional to 2,554.78, 3,525.45 and 1,435.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,554.78 : 3,525.45 = 1,435.76 : x
2. Step 2: Convert to fraction form
   2,554.78/3,525.45 = 1,435.76/x
3. Step 3: Cross multiply
   2,554.78x = 3,525.45 × 1,435.76
4. Step 4: Simplify right side
   2,554.78x = 5,061,700.09
5. Step 5: Solve for x
   x = 5,061,700.09/2,554.78
6. Step 6: Final answer
   x = 1,981.27