Finding the Fourth Proportional to 1,906.72, 2,863.30 and 1,665.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.72 : 2,863.30 = 1,665.34 : x
2. Step 2: Convert to fraction form
   1,906.72/2,863.30 = 1,665.34/x
3. Step 3: Cross multiply
   1,906.72x = 2,863.30 × 1,665.34
4. Step 4: Simplify right side
   1,906.72x = 4,768,368.02
5. Step 5: Solve for x
   x = 4,768,368.02/1,906.72
6. Step 6: Final answer
   x = 2,500.82