Finding the Fourth Proportional to 3,630.42, 5,448.69 and 1,988.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,630.42 : 5,448.69 = 1,988.10 : x
2. Step 2: Convert to fraction form
   3,630.42/5,448.69 = 1,988.10/x
3. Step 3: Cross multiply
   3,630.42x = 5,448.69 × 1,988.10
4. Step 4: Simplify right side
   3,630.42x = 10,832,540.59
5. Step 5: Solve for x
   x = 10,832,540.59/3,630.42
6. Step 6: Final answer
   x = 2,983.83