Finding the Fourth Proportional to 2,870.55, 3,961.68 and 1,611.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.55 : 3,961.68 = 1,611.94 : x
2. Step 2: Convert to fraction form
   2,870.55/3,961.68 = 1,611.94/x
3. Step 3: Cross multiply
   2,870.55x = 3,961.68 × 1,611.94
4. Step 4: Simplify right side
   2,870.55x = 6,385,990.46
5. Step 5: Solve for x
   x = 6,385,990.46/2,870.55
6. Step 6: Final answer
   x = 2,224.66