Finding the Fourth Proportional to 1,986.09, 2,740.41 and 1,200.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.09 : 2,740.41 = 1,200.18 : x
2. Step 2: Convert to fraction form
   1,986.09/2,740.41 = 1,200.18/x
3. Step 3: Cross multiply
   1,986.09x = 2,740.41 × 1,200.18
4. Step 4: Simplify right side
   1,986.09x = 3,288,985.27
5. Step 5: Solve for x
   x = 3,288,985.27/1,986.09
6. Step 6: Final answer
   x = 1,656.01