Finding the Fourth Proportional to 1,665.84, 2,494.10 and 1,081.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.84 : 2,494.10 = 1,081.48 : x
2. Step 2: Convert to fraction form
   1,665.84/2,494.10 = 1,081.48/x
3. Step 3: Cross multiply
   1,665.84x = 2,494.10 × 1,081.48
4. Step 4: Simplify right side
   1,665.84x = 2,697,319.27
5. Step 5: Solve for x
   x = 2,697,319.27/1,665.84
6. Step 6: Final answer
   x = 1,619.19