Finding the Fourth Proportional to 2,545.89, 3,513.12 and 1,426.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.89 : 3,513.12 = 1,426.57 : x
2. Step 2: Convert to fraction form
   2,545.89/3,513.12 = 1,426.57/x
3. Step 3: Cross multiply
   2,545.89x = 3,513.12 × 1,426.57
4. Step 4: Simplify right side
   2,545.89x = 5,011,711.60
5. Step 5: Solve for x
   x = 5,011,711.60/2,545.89
6. Step 6: Final answer
   x = 1,968.55