Finding the Fourth Proportional to 1,103.72, 1,523.61 and 730.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.72 : 1,523.61 = 730.88 : x
2. Step 2: Convert to fraction form
   1,103.72/1,523.61 = 730.88/x
3. Step 3: Cross multiply
   1,103.72x = 1,523.61 × 730.88
4. Step 4: Simplify right side
   1,103.72x = 1,113,576.08
5. Step 5: Solve for x
   x = 1,113,576.08/1,103.72
6. Step 6: Final answer
   x = 1,008.93