Finding the Fourth Proportional to 3,716.45, 5,128.69 and 2,037.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,716.45 : 5,128.69 = 2,037.91 : x
2. Step 2: Convert to fraction form
   3,716.45/5,128.69 = 2,037.91/x
3. Step 3: Cross multiply
   3,716.45x = 5,128.69 × 2,037.91
4. Step 4: Simplify right side
   3,716.45x = 10,451,808.64
5. Step 5: Solve for x
   x = 10,451,808.64/3,716.45
6. Step 6: Final answer
   x = 2,812.31