Finding the Fourth Proportional to 2,545.68, 3,513.12 and 1,426.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.68 : 3,513.12 = 1,426.80 : x
2. Step 2: Convert to fraction form
   2,545.68/3,513.12 = 1,426.80/x
3. Step 3: Cross multiply
   2,545.68x = 3,513.12 × 1,426.80
4. Step 4: Simplify right side
   2,545.68x = 5,012,519.62
5. Step 5: Solve for x
   x = 5,012,519.62/2,545.68
6. Step 6: Final answer
   x = 1,969.03