Finding the Fourth Proportional to 1,665.08, 2,495.22 and 1,086.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.08 : 2,495.22 = 1,086.52 : x
2. Step 2: Convert to fraction form
   1,665.08/2,495.22 = 1,086.52/x
3. Step 3: Cross multiply
   1,665.08x = 2,495.22 × 1,086.52
4. Step 4: Simplify right side
   1,665.08x = 2,711,106.43
5. Step 5: Solve for x
   x = 2,711,106.43/1,665.08
6. Step 6: Final answer
   x = 1,628.21