Finding the Fourth Proportional to 2,386.30, 3,580.02 and 826.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.30 : 3,580.02 = 826.24 : x
2. Step 2: Convert to fraction form
   2,386.30/3,580.02 = 826.24/x
3. Step 3: Cross multiply
   2,386.30x = 3,580.02 × 826.24
4. Step 4: Simplify right side
   2,386.30x = 2,957,955.72
5. Step 5: Solve for x
   x = 2,957,955.72/2,386.30
6. Step 6: Final answer
   x = 1,239.56