Finding the Fourth Proportional to 2,605.57, 3,595.69 and 1,426.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.57 : 3,595.69 = 1,426.72 : x
2. Step 2: Convert to fraction form
   2,605.57/3,595.69 = 1,426.72/x
3. Step 3: Cross multiply
   2,605.57x = 3,595.69 × 1,426.72
4. Step 4: Simplify right side
   2,605.57x = 5,130,024.86
5. Step 5: Solve for x
   x = 5,130,024.86/2,605.57
6. Step 6: Final answer
   x = 1,968.87