Finding the Fourth Proportional to 2,557.78, 3,528.70 and 1,480.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557.78 : 3,528.70 = 1,480.34 : x
2. Step 2: Convert to fraction form
   2,557.78/3,528.70 = 1,480.34/x
3. Step 3: Cross multiply
   2,557.78x = 3,528.70 × 1,480.34
4. Step 4: Simplify right side
   2,557.78x = 5,223,672.24
5. Step 5: Solve for x
   x = 5,223,672.24/2,557.78
6. Step 6: Final answer
   x = 2,042.27