Finding the Fourth Proportional to 1,281.56, 1,920.69 and 696.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,281.56 : 1,920.69 = 696.83 : x
2. Step 2: Convert to fraction form
   1,281.56/1,920.69 = 696.83/x
3. Step 3: Cross multiply
   1,281.56x = 1,920.69 × 696.83
4. Step 4: Simplify right side
   1,281.56x = 1,338,384.81
5. Step 5: Solve for x
   x = 1,338,384.81/1,281.56
6. Step 6: Final answer
   x = 1,044.34