Finding the Fourth Proportional to 2,091.72, 3,139.73 and 1,634.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.72 : 3,139.73 = 1,634.58 : x
2. Step 2: Convert to fraction form
   2,091.72/3,139.73 = 1,634.58/x
3. Step 3: Cross multiply
   2,091.72x = 3,139.73 × 1,634.58
4. Step 4: Simplify right side
   2,091.72x = 5,132,137.82
5. Step 5: Solve for x
   x = 5,132,137.82/2,091.72
6. Step 6: Final answer
   x = 2,453.54