Finding the Fourth Proportional to 2,261.45, 3,120.12 and 1,516.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,261.45 : 3,120.12 = 1,516.15 : x
2. Step 2: Convert to fraction form
   2,261.45/3,120.12 = 1,516.15/x
3. Step 3: Cross multiply
   2,261.45x = 3,120.12 × 1,516.15
4. Step 4: Simplify right side
   2,261.45x = 4,730,573.84
5. Step 5: Solve for x
   x = 4,730,573.84/2,261.45
6. Step 6: Final answer
   x = 2,091.83