Finding the Fourth Proportional to 1,280.69, 1,919.60 and 595.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,280.69 : 1,919.60 = 595.25 : x
2. Step 2: Convert to fraction form
   1,280.69/1,919.60 = 595.25/x
3. Step 3: Cross multiply
   1,280.69x = 1,919.60 × 595.25
4. Step 4: Simplify right side
   1,280.69x = 1,142,638.92
5. Step 5: Solve for x
   x = 1,142,638.92/1,280.69
6. Step 6: Final answer
   x = 892.21