Finding the Fourth Proportional to 2,372.85, 3,275.81 and 1,665.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,372.85 : 3,275.81 = 1,665.72 : x
2. Step 2: Convert to fraction form
   2,372.85/3,275.81 = 1,665.72/x
3. Step 3: Cross multiply
   2,372.85x = 3,275.81 × 1,665.72
4. Step 4: Simplify right side
   2,372.85x = 5,456,580.15
5. Step 5: Solve for x
   x = 5,456,580.15/2,372.85
6. Step 6: Final answer
   x = 2,299.59