Finding the Fourth Proportional to 2,391.15, 3,587.94 and 1,569.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.15 : 3,587.94 = 1,569.81 : x
2. Step 2: Convert to fraction form
   2,391.15/3,587.94 = 1,569.81/x
3. Step 3: Cross multiply
   2,391.15x = 3,587.94 × 1,569.81
4. Step 4: Simplify right side
   2,391.15x = 5,632,384.09
5. Step 5: Solve for x
   x = 5,632,384.09/2,391.15
6. Step 6: Final answer
   x = 2,355.51