Finding the Fourth Proportional to 2,870.98, 3,961.98 and 1,611.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.98 : 3,961.98 = 1,611.95 : x
2. Step 2: Convert to fraction form
   2,870.98/3,961.98 = 1,611.95/x
3. Step 3: Cross multiply
   2,870.98x = 3,961.98 × 1,611.95
4. Step 4: Simplify right side
   2,870.98x = 6,386,523.57
5. Step 5: Solve for x
   x = 6,386,523.57/2,870.98
6. Step 6: Final answer
   x = 2,224.51