Finding the Fourth Proportional to 1,172.52, 1,756.42 and 556.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,172.52 : 1,756.42 = 556.82 : x
2. Step 2: Convert to fraction form
   1,172.52/1,756.42 = 556.82/x
3. Step 3: Cross multiply
   1,172.52x = 1,756.42 × 556.82
4. Step 4: Simplify right side
   1,172.52x = 978,012.62
5. Step 5: Solve for x
   x = 978,012.62/1,172.52
6. Step 6: Final answer
   x = 834.11