Finding the Fourth Proportional to 2,981.63, 4,116.65 and 2,665.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,981.63 : 4,116.65 = 2,665.87 : x
2. Step 2: Convert to fraction form
   2,981.63/4,116.65 = 2,665.87/x
3. Step 3: Cross multiply
   2,981.63x = 4,116.65 × 2,665.87
4. Step 4: Simplify right side
   2,981.63x = 10,974,453.74
5. Step 5: Solve for x
   x = 10,974,453.74/2,981.63
6. Step 6: Final answer
   x = 3,680.69