Finding the Fourth Proportional to 2,307.50, 3,458.67 and 920.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,307.50 : 3,458.67 = 920.48 : x
2. Step 2: Convert to fraction form
   2,307.50/3,458.67 = 920.48/x
3. Step 3: Cross multiply
   2,307.50x = 3,458.67 × 920.48
4. Step 4: Simplify right side
   2,307.50x = 3,183,619.27
5. Step 5: Solve for x
   x = 3,183,619.27/2,307.50
6. Step 6: Final answer
   x = 1,379.69