Finding the Fourth Proportional to 2,545.47, 3,512.72 and 1,426.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.47 : 3,512.72 = 1,426.40 : x
2. Step 2: Convert to fraction form
   2,545.47/3,512.72 = 1,426.40/x
3. Step 3: Cross multiply
   2,545.47x = 3,512.72 × 1,426.40
4. Step 4: Simplify right side
   2,545.47x = 5,010,543.81
5. Step 5: Solve for x
   x = 5,010,543.81/2,545.47
6. Step 6: Final answer
   x = 1,968.42