Finding the Fourth Proportional to 1,702.72, 2,554.56 and 548.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,702.72 : 2,554.56 = 548.56 : x
2. Step 2: Convert to fraction form
   1,702.72/2,554.56 = 548.56/x
3. Step 3: Cross multiply
   1,702.72x = 2,554.56 × 548.56
4. Step 4: Simplify right side
   1,702.72x = 1,401,329.43
5. Step 5: Solve for x
   x = 1,401,329.43/1,702.72
6. Step 6: Final answer
   x = 822.99