Finding the Fourth Proportional to 3,663.47, 5,055.61 and 1,984.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.47 : 5,055.61 = 1,984.90 : x
2. Step 2: Convert to fraction form
   3,663.47/5,055.61 = 1,984.90/x
3. Step 3: Cross multiply
   3,663.47x = 5,055.61 × 1,984.90
4. Step 4: Simplify right side
   3,663.47x = 10,034,862.69
5. Step 5: Solve for x
   x = 10,034,862.69/3,663.47
6. Step 6: Final answer
   x = 2,739.17