Finding the Fourth Proportional to 2,763.61, 3,813.74 and 1,521.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,763.61 : 3,813.74 = 1,521.61 : x
2. Step 2: Convert to fraction form
   2,763.61/3,813.74 = 1,521.61/x
3. Step 3: Cross multiply
   2,763.61x = 3,813.74 × 1,521.61
4. Step 4: Simplify right side
   2,763.61x = 5,803,007.78
5. Step 5: Solve for x
   x = 5,803,007.78/2,763.61
6. Step 6: Final answer
   x = 2,099.79