Finding the Fourth Proportional to 1,172.67, 1,758.72 and 350.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,172.67 : 1,758.72 = 350.70 : x
2. Step 2: Convert to fraction form
   1,172.67/1,758.72 = 350.70/x
3. Step 3: Cross multiply
   1,172.67x = 1,758.72 × 350.70
4. Step 4: Simplify right side
   1,172.67x = 616,783.10
5. Step 5: Solve for x
   x = 616,783.10/1,172.67
6. Step 6: Final answer
   x = 525.96