Finding the Fourth Proportional to 2,435.57, 3,656.49 and 2,091.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,435.57 : 3,656.49 = 2,091.12 : x
2. Step 2: Convert to fraction form
   2,435.57/3,656.49 = 2,091.12/x
3. Step 3: Cross multiply
   2,435.57x = 3,656.49 × 2,091.12
4. Step 4: Simplify right side
   2,435.57x = 7,646,159.37
5. Step 5: Solve for x
   x = 7,646,159.37/2,435.57
6. Step 6: Final answer
   x = 3,139.37