Finding the Fourth Proportional to 2,409.38, 3,614.61 and 870.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,409.38 : 3,614.61 = 870.38 : x
2. Step 2: Convert to fraction form
   2,409.38/3,614.61 = 870.38/x
3. Step 3: Cross multiply
   2,409.38x = 3,614.61 × 870.38
4. Step 4: Simplify right side
   2,409.38x = 3,146,066.18
5. Step 5: Solve for x
   x = 3,146,066.18/2,409.38
6. Step 6: Final answer
   x = 1,305.76