Finding the Fourth Proportional to 2,610.30, 3,915.25 and 1,223.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.30 : 3,915.25 = 1,223.28 : x
2. Step 2: Convert to fraction form
   2,610.30/3,915.25 = 1,223.28/x
3. Step 3: Cross multiply
   2,610.30x = 3,915.25 × 1,223.28
4. Step 4: Simplify right side
   2,610.30x = 4,789,443.96
5. Step 5: Solve for x
   x = 4,789,443.96/2,610.30
6. Step 6: Final answer
   x = 1,834.83