Finding the Fourth Proportional to 2,333.30, 3,501.30 and 872.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,333.30 : 3,501.30 = 872.60 : x
2. Step 2: Convert to fraction form
   2,333.30/3,501.30 = 872.60/x
3. Step 3: Cross multiply
   2,333.30x = 3,501.30 × 872.60
4. Step 4: Simplify right side
   2,333.30x = 3,055,234.38
5. Step 5: Solve for x
   x = 3,055,234.38/2,333.30
6. Step 6: Final answer
   x = 1,309.40