Finding the Fourth Proportional to 1,171.05, 1,756.56 and 349.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.05 : 1,756.56 = 349.89 : x
2. Step 2: Convert to fraction form
   1,171.05/1,756.56 = 349.89/x
3. Step 3: Cross multiply
   1,171.05x = 1,756.56 × 349.89
4. Step 4: Simplify right side
   1,171.05x = 614,602.78
5. Step 5: Solve for x
   x = 614,602.78/1,171.05
6. Step 6: Final answer
   x = 524.83