Finding the Fourth Proportional to 3,666.45, 5,059.63 and 1,987.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666.45 : 5,059.63 = 1,987.83 : x
2. Step 2: Convert to fraction form
   3,666.45/5,059.63 = 1,987.83/x
3. Step 3: Cross multiply
   3,666.45x = 5,059.63 × 1,987.83
4. Step 4: Simplify right side
   3,666.45x = 10,057,684.30
5. Step 5: Solve for x
   x = 10,057,684.30/3,666.45
6. Step 6: Final answer
   x = 2,743.17