Finding the Fourth Proportional to 2,310.72, 3,186.32 and 1,523.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.72 : 3,186.32 = 1,523.40 : x
2. Step 2: Convert to fraction form
   2,310.72/3,186.32 = 1,523.40/x
3. Step 3: Cross multiply
   2,310.72x = 3,186.32 × 1,523.40
4. Step 4: Simplify right side
   2,310.72x = 4,854,039.89
5. Step 5: Solve for x
   x = 4,854,039.89/2,310.72
6. Step 6: Final answer
   x = 2,100.66