Finding the Fourth Proportional to 2,569.54, 3,545.94 and 1,390.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,569.54 : 3,545.94 = 1,390.59 : x
2. Step 2: Convert to fraction form
   2,569.54/3,545.94 = 1,390.59/x
3. Step 3: Cross multiply
   2,569.54x = 3,545.94 × 1,390.59
4. Step 4: Simplify right side
   2,569.54x = 4,930,948.70
5. Step 5: Solve for x
   x = 4,930,948.70/2,569.54
6. Step 6: Final answer
   x = 1,919.00