Finding the Fourth Proportional to 2,077.19, 3,111.78 and 1,636.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.19 : 3,111.78 = 1,636.11 : x
2. Step 2: Convert to fraction form
   2,077.19/3,111.78 = 1,636.11/x
3. Step 3: Cross multiply
   2,077.19x = 3,111.78 × 1,636.11
4. Step 4: Simplify right side
   2,077.19x = 5,091,214.38
5. Step 5: Solve for x
   x = 5,091,214.38/2,077.19
6. Step 6: Final answer
   x = 2,451.01