Finding the Fourth Proportional to 2,569.71, 3,546.27 and 1,521.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,569.71 : 3,546.27 = 1,521.78 : x
2. Step 2: Convert to fraction form
   2,569.71/3,546.27 = 1,521.78/x
3. Step 3: Cross multiply
   2,569.71x = 3,546.27 × 1,521.78
4. Step 4: Simplify right side
   2,569.71x = 5,396,642.76
5. Step 5: Solve for x
   x = 5,396,642.76/2,569.71
6. Step 6: Final answer
   x = 2,100.10