Finding the Fourth Proportional to 2,870.73, 3,961.27 and 1,611.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.73 : 3,961.27 = 1,611.61 : x
2. Step 2: Convert to fraction form
   2,870.73/3,961.27 = 1,611.61/x
3. Step 3: Cross multiply
   2,870.73x = 3,961.27 × 1,611.61
4. Step 4: Simplify right side
   2,870.73x = 6,384,022.34
5. Step 5: Solve for x
   x = 6,384,022.34/2,870.73
6. Step 6: Final answer
   x = 2,223.83