Finding the Fourth Proportional to 2,824.30, 3,895.59 and 1,986.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,824.30 : 3,895.59 = 1,986.76 : x
2. Step 2: Convert to fraction form
   2,824.30/3,895.59 = 1,986.76/x
3. Step 3: Cross multiply
   2,824.30x = 3,895.59 × 1,986.76
4. Step 4: Simplify right side
   2,824.30x = 7,739,602.39
5. Step 5: Solve for x
   x = 7,739,602.39/2,824.30
6. Step 6: Final answer
   x = 2,740.36