Finding the Fourth Proportional to 2,516.89, 3,775.05 and 668.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,516.89 : 3,775.05 = 668.15 : x
2. Step 2: Convert to fraction form
   2,516.89/3,775.05 = 668.15/x
3. Step 3: Cross multiply
   2,516.89x = 3,775.05 × 668.15
4. Step 4: Simplify right side
   2,516.89x = 2,522,311.51
5. Step 5: Solve for x
   x = 2,522,311.51/2,516.89
6. Step 6: Final answer
   x = 1,002.15