Finding the Fourth Proportional to 1,280.72, 1,924.54 and 696.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,280.72 : 1,924.54 = 696.10 : x
2. Step 2: Convert to fraction form
   1,280.72/1,924.54 = 696.10/x
3. Step 3: Cross multiply
   1,280.72x = 1,924.54 × 696.10
4. Step 4: Simplify right side
   1,280.72x = 1,339,672.29
5. Step 5: Solve for x
   x = 1,339,672.29/1,280.72
6. Step 6: Final answer
   x = 1,046.03