Finding the Fourth Proportional to 2,516.74, 3,775.42 and 667.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,516.74 : 3,775.42 = 667.89 : x
2. Step 2: Convert to fraction form
   2,516.74/3,775.42 = 667.89/x
3. Step 3: Cross multiply
   2,516.74x = 3,775.42 × 667.89
4. Step 4: Simplify right side
   2,516.74x = 2,521,565.26
5. Step 5: Solve for x
   x = 2,521,565.26/2,516.74
6. Step 6: Final answer
   x = 1,001.92