Finding the Fourth Proportional to 2,521.37, 3,479.21 and 1,512.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,521.37 : 3,479.21 = 1,512.87 : x
2. Step 2: Convert to fraction form
   2,521.37/3,479.21 = 1,512.87/x
3. Step 3: Cross multiply
   2,521.37x = 3,479.21 × 1,512.87
4. Step 4: Simplify right side
   2,521.37x = 5,263,606.69
5. Step 5: Solve for x
   x = 5,263,606.69/2,521.37
6. Step 6: Final answer
   x = 2,087.60