Finding the Fourth Proportional to 2,876.84, 3,968.14 and 2,658.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,876.84 : 3,968.14 = 2,658.12 : x
2. Step 2: Convert to fraction form
   2,876.84/3,968.14 = 2,658.12/x
3. Step 3: Cross multiply
   2,876.84x = 3,968.14 × 2,658.12
4. Step 4: Simplify right side
   2,876.84x = 10,547,792.30
5. Step 5: Solve for x
   x = 10,547,792.30/2,876.84
6. Step 6: Final answer
   x = 3,666.45