Finding the Fourth Proportional to 2,545.35, 3,511.80 and 1,426.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.35 : 3,511.80 = 1,426.11 : x
2. Step 2: Convert to fraction form
   2,545.35/3,511.80 = 1,426.11/x
3. Step 3: Cross multiply
   2,545.35x = 3,511.80 × 1,426.11
4. Step 4: Simplify right side
   2,545.35x = 5,008,213.10
5. Step 5: Solve for x
   x = 5,008,213.10/2,545.35
6. Step 6: Final answer
   x = 1,967.59