Finding the Fourth Proportional to 1,128.60, 1,691.69 and 695.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128.60 : 1,691.69 = 695.25 : x
2. Step 2: Convert to fraction form
   1,128.60/1,691.69 = 695.25/x
3. Step 3: Cross multiply
   1,128.60x = 1,691.69 × 695.25
4. Step 4: Simplify right side
   1,128.60x = 1,176,144.00
5. Step 5: Solve for x
   x = 1,176,144.00/1,128.60
6. Step 6: Final answer
   x = 1,042.13