Finding the Fourth Proportional to 1,228.83, 1,695.69 and 731.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228.83 : 1,695.69 = 731.58 : x
2. Step 2: Convert to fraction form
   1,228.83/1,695.69 = 731.58/x
3. Step 3: Cross multiply
   1,228.83x = 1,695.69 × 731.58
4. Step 4: Simplify right side
   1,228.83x = 1,240,532.89
5. Step 5: Solve for x
   x = 1,240,532.89/1,228.83
6. Step 6: Final answer
   x = 1,009.52