Finding the Fourth Proportional to 2,807.56, 3,875.70 and 2,662.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,807.56 : 3,875.70 = 2,662.12 : x
2. Step 2: Convert to fraction form
   2,807.56/3,875.70 = 2,662.12/x
3. Step 3: Cross multiply
   2,807.56x = 3,875.70 × 2,662.12
4. Step 4: Simplify right side
   2,807.56x = 10,317,578.48
5. Step 5: Solve for x
   x = 10,317,578.48/2,807.56
6. Step 6: Final answer
   x = 3,674.93