Finding the Fourth Proportional to 1,986.76, 2,741.52 and 1,102.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.76 : 2,741.52 = 1,102.42 : x
2. Step 2: Convert to fraction form
   1,986.76/2,741.52 = 1,102.42/x
3. Step 3: Cross multiply
   1,986.76x = 2,741.52 × 1,102.42
4. Step 4: Simplify right side
   1,986.76x = 3,022,306.48
5. Step 5: Solve for x
   x = 3,022,306.48/1,986.76
6. Step 6: Final answer
   x = 1,521.22