Finding the Fourth Proportional to 1,986.36, 2,741.67 and 1,200.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.36 : 2,741.67 = 1,200.30 : x
2. Step 2: Convert to fraction form
   1,986.36/2,741.67 = 1,200.30/x
3. Step 3: Cross multiply
   1,986.36x = 2,741.67 × 1,200.30
4. Step 4: Simplify right side
   1,986.36x = 3,290,826.50
5. Step 5: Solve for x
   x = 3,290,826.50/1,986.36
6. Step 6: Final answer
   x = 1,656.71