Finding the Fourth Proportional to 2,987.72, 4,125.82 and 2,545.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,987.72 : 4,125.82 = 2,545.46 : x
2. Step 2: Convert to fraction form
   2,987.72/4,125.82 = 2,545.46/x
3. Step 3: Cross multiply
   2,987.72x = 4,125.82 × 2,545.46
4. Step 4: Simplify right side
   2,987.72x = 10,502,109.78
5. Step 5: Solve for x
   x = 10,502,109.78/2,987.72
6. Step 6: Final answer
   x = 3,515.09