Finding the Fourth Proportional to 2,583.81, 3,565.71 and 1,521.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,583.81 : 3,565.71 = 1,521.63 : x
2. Step 2: Convert to fraction form
   2,583.81/3,565.71 = 1,521.63/x
3. Step 3: Cross multiply
   2,583.81x = 3,565.71 × 1,521.63
4. Step 4: Simplify right side
   2,583.81x = 5,425,691.31
5. Step 5: Solve for x
   x = 5,425,691.31/2,583.81
6. Step 6: Final answer
   x = 2,099.88