Finding the Fourth Proportional to 2,586.45, 3,569.31 and 1,407.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,586.45 : 3,569.31 = 1,407.52 : x
2. Step 2: Convert to fraction form
   2,586.45/3,569.31 = 1,407.52/x
3. Step 3: Cross multiply
   2,586.45x = 3,569.31 × 1,407.52
4. Step 4: Simplify right side
   2,586.45x = 5,023,850.33
5. Step 5: Solve for x
   x = 5,023,850.33/2,586.45
6. Step 6: Final answer
   x = 1,942.38