Finding the Fourth Proportional to 2,103.05, 3,154.73 and 1,639.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.05 : 3,154.73 = 1,639.93 : x
2. Step 2: Convert to fraction form
   2,103.05/3,154.73 = 1,639.93/x
3. Step 3: Cross multiply
   2,103.05x = 3,154.73 × 1,639.93
4. Step 4: Simplify right side
   2,103.05x = 5,173,536.37
5. Step 5: Solve for x
   x = 5,173,536.37/2,103.05
6. Step 6: Final answer
   x = 2,460.02