Finding the Fourth Proportional to 1,986.30, 2,741.06 and 1,102.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.30 : 2,741.06 = 1,102.10 : x
2. Step 2: Convert to fraction form
   1,986.30/2,741.06 = 1,102.10/x
3. Step 3: Cross multiply
   1,986.30x = 2,741.06 × 1,102.10
4. Step 4: Simplify right side
   1,986.30x = 3,020,922.23
5. Step 5: Solve for x
   x = 3,020,922.23/1,986.30
6. Step 6: Final answer
   x = 1,520.88