Finding the Fourth Proportional to 1,986.48, 2,741.33 and 1,200.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.48 : 2,741.33 = 1,200.53 : x
2. Step 2: Convert to fraction form
   1,986.48/2,741.33 = 1,200.53/x
3. Step 3: Cross multiply
   1,986.48x = 2,741.33 × 1,200.53
4. Step 4: Simplify right side
   1,986.48x = 3,291,058.76
5. Step 5: Solve for x
   x = 3,291,058.76/1,986.48
6. Step 6: Final answer
   x = 1,656.73