Finding the Fourth Proportional to 2,351.64, 3,510.56 and 2,180.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,351.64 : 3,510.56 = 2,180.76 : x
2. Step 2: Convert to fraction form
   2,351.64/3,510.56 = 2,180.76/x
3. Step 3: Cross multiply
   2,351.64x = 3,510.56 × 2,180.76
4. Step 4: Simplify right side
   2,351.64x = 7,655,688.83
5. Step 5: Solve for x
   x = 7,655,688.83/2,351.64
6. Step 6: Final answer
   x = 3,255.47