Finding the Fourth Proportional to 1,081.76, 1,623.72 and 735.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.76 : 1,623.72 = 735.12 : x
2. Step 2: Convert to fraction form
   1,081.76/1,623.72 = 735.12/x
3. Step 3: Cross multiply
   1,081.76x = 1,623.72 × 735.12
4. Step 4: Simplify right side
   1,081.76x = 1,193,629.05
5. Step 5: Solve for x
   x = 1,193,629.05/1,081.76
6. Step 6: Final answer
   x = 1,103.41