Finding the Fourth Proportional to 2,665.91, 3,678.41 and 2,037.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.91 : 3,678.41 = 2,037.15 : x
2. Step 2: Convert to fraction form
   2,665.91/3,678.41 = 2,037.15/x
3. Step 3: Cross multiply
   2,665.91x = 3,678.41 × 2,037.15
4. Step 4: Simplify right side
   2,665.91x = 7,493,478.02
5. Step 5: Solve for x
   x = 7,493,478.02/2,665.91
6. Step 6: Final answer
   x = 2,810.85