Finding the Fourth Proportional to 2,870.73, 3,961.55 and 1,611.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.73 : 3,961.55 = 1,611.86 : x
2. Step 2: Convert to fraction form
   2,870.73/3,961.55 = 1,611.86/x
3. Step 3: Cross multiply
   2,870.73x = 3,961.55 × 1,611.86
4. Step 4: Simplify right side
   2,870.73x = 6,385,436.12
5. Step 5: Solve for x
   x = 6,385,436.12/2,870.73
6. Step 6: Final answer
   x = 2,224.32