Finding the Fourth Proportional to 1,171.49, 1,754.72 and 554.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.49 : 1,754.72 = 554.27 : x
2. Step 2: Convert to fraction form
   1,171.49/1,754.72 = 554.27/x
3. Step 3: Cross multiply
   1,171.49x = 1,754.72 × 554.27
4. Step 4: Simplify right side
   1,171.49x = 972,577.11
5. Step 5: Solve for x
   x = 972,577.11/1,171.49
6. Step 6: Final answer
   x = 830.21