Finding the Fourth Proportional to 1,986.42, 2,741.38 and 1,147.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.42 : 2,741.38 = 1,147.34 : x
2. Step 2: Convert to fraction form
   1,986.42/2,741.38 = 1,147.34/x
3. Step 3: Cross multiply
   1,986.42x = 2,741.38 × 1,147.34
4. Step 4: Simplify right side
   1,986.42x = 3,145,294.93
5. Step 5: Solve for x
   x = 3,145,294.93/1,986.42
6. Step 6: Final answer
   x = 1,583.40