Finding the Fourth Proportional to 2,185.92, 3,015.39 and 1,521.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.92 : 3,015.39 = 1,521.63 : x
2. Step 2: Convert to fraction form
   2,185.92/3,015.39 = 1,521.63/x
3. Step 3: Cross multiply
   2,185.92x = 3,015.39 × 1,521.63
4. Step 4: Simplify right side
   2,185.92x = 4,588,307.89
5. Step 5: Solve for x
   x = 4,588,307.89/2,185.92
6. Step 6: Final answer
   x = 2,099.03