Finding the Fourth Proportional to 2,569.74, 3,546.25 and 1,390.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,569.74 : 3,546.25 = 1,390.82 : x
2. Step 2: Convert to fraction form
   2,569.74/3,546.25 = 1,390.82/x
3. Step 3: Cross multiply
   2,569.74x = 3,546.25 × 1,390.82
4. Step 4: Simplify right side
   2,569.74x = 4,932,200.81
5. Step 5: Solve for x
   x = 4,932,200.81/2,569.74
6. Step 6: Final answer
   x = 1,919.34