Finding the Fourth Proportional to 1,664.08, 2,493.72 and 1,085.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.08 : 2,493.72 = 1,085.52 : x
2. Step 2: Convert to fraction form
   1,664.08/2,493.72 = 1,085.52/x
3. Step 3: Cross multiply
   1,664.08x = 2,493.72 × 1,085.52
4. Step 4: Simplify right side
   1,664.08x = 2,706,982.93
5. Step 5: Solve for x
   x = 2,706,982.93/1,664.08
6. Step 6: Final answer
   x = 1,626.71