Finding the Fourth Proportional to 753.05, 1,128.56 and 730.89

Step by Step Solution

1. Step 1: Write the proportion equation
   753.05 : 1,128.56 = 730.89 : x
2. Step 2: Convert to fraction form
   753.05/1,128.56 = 730.89/x
3. Step 3: Cross multiply
   753.05x = 1,128.56 × 730.89
4. Step 4: Simplify right side
   753.05x = 824,849.56
5. Step 5: Solve for x
   x = 824,849.56/753.05
6. Step 6: Final answer
   x = 1,095.34