Finding the Fourth Proportional to 1,986.66, 2,741.72 and 1,147.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.66 : 2,741.72 = 1,147.53 : x
2. Step 2: Convert to fraction form
   1,986.66/2,741.72 = 1,147.53/x
3. Step 3: Cross multiply
   1,986.66x = 2,741.72 × 1,147.53
4. Step 4: Simplify right side
   1,986.66x = 3,146,210.50
5. Step 5: Solve for x
   x = 3,146,210.50/1,986.66
6. Step 6: Final answer
   x = 1,583.67