Finding the Fourth Proportional to 1,986.39, 2,741.10 and 1,147.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.39 : 2,741.10 = 1,147.25 : x
2. Step 2: Convert to fraction form
   1,986.39/2,741.10 = 1,147.25/x
3. Step 3: Cross multiply
   1,986.39x = 2,741.10 × 1,147.25
4. Step 4: Simplify right side
   1,986.39x = 3,144,713.27
5. Step 5: Solve for x
   x = 3,144,713.27/1,986.39
6. Step 6: Final answer
   x = 1,583.13