Finding the Fourth Proportional to 1,581.58, 2,180.46 and 1,108.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,581.58 : 2,180.46 = 1,108.84 : x
2. Step 2: Convert to fraction form
   1,581.58/2,180.46 = 1,108.84/x
3. Step 3: Cross multiply
   1,581.58x = 2,180.46 × 1,108.84
4. Step 4: Simplify right side
   1,581.58x = 2,417,781.27
5. Step 5: Solve for x
   x = 2,417,781.27/1,581.58
6. Step 6: Final answer
   x = 1,528.71