Finding the Fourth Proportional to 1,171.56, 1,755.72 and 1,017.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.56 : 1,755.72 = 1,017.12 : x
2. Step 2: Convert to fraction form
   1,171.56/1,755.72 = 1,017.12/x
3. Step 3: Cross multiply
   1,171.56x = 1,755.72 × 1,017.12
4. Step 4: Simplify right side
   1,171.56x = 1,785,777.93
5. Step 5: Solve for x
   x = 1,785,777.93/1,171.56
6. Step 6: Final answer
   x = 1,524.27