Finding the Fourth Proportional to 1,171.70, 1,756.72 and 555.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.70 : 1,756.72 = 555.05 : x
2. Step 2: Convert to fraction form
   1,171.70/1,756.72 = 555.05/x
3. Step 3: Cross multiply
   1,171.70x = 1,756.72 × 555.05
4. Step 4: Simplify right side
   1,171.70x = 975,072.52
5. Step 5: Solve for x
   x = 975,072.52/1,171.70
6. Step 6: Final answer
   x = 832.19