Finding the Fourth Proportional to 1,128.29, 1,691.75 and 469.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128.29 : 1,691.75 = 469.37 : x
2. Step 2: Convert to fraction form
   1,128.29/1,691.75 = 469.37/x
3. Step 3: Cross multiply
   1,128.29x = 1,691.75 × 469.37
4. Step 4: Simplify right side
   1,128.29x = 794,045.89
5. Step 5: Solve for x
   x = 794,045.89/1,128.29
6. Step 6: Final answer
   x = 703.76