Finding the Fourth Proportional to 2,510.45, 3,765.71 and 661.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.45 : 3,765.71 = 661.58 : x
2. Step 2: Convert to fraction form
   2,510.45/3,765.71 = 661.58/x
3. Step 3: Cross multiply
   2,510.45x = 3,765.71 × 661.58
4. Step 4: Simplify right side
   2,510.45x = 2,491,336.55
5. Step 5: Solve for x
   x = 2,491,336.55/2,510.45
6. Step 6: Final answer
   x = 992.38