Finding the Fourth Proportional to 2,636.08, 3,945.60 and 1,401.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.08 : 3,945.60 = 1,401.76 : x
2. Step 2: Convert to fraction form
   2,636.08/3,945.60 = 1,401.76/x
3. Step 3: Cross multiply
   2,636.08x = 3,945.60 × 1,401.76
4. Step 4: Simplify right side
   2,636.08x = 5,530,784.26
5. Step 5: Solve for x
   x = 5,530,784.26/2,636.08
6. Step 6: Final answer
   x = 2,098.11