Finding the Fourth Proportional to 1,084.63, 1,496.79 and 587.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.63 : 1,496.79 = 587.28 : x
2. Step 2: Convert to fraction form
   1,084.63/1,496.79 = 587.28/x
3. Step 3: Cross multiply
   1,084.63x = 1,496.79 × 587.28
4. Step 4: Simplify right side
   1,084.63x = 879,034.83
5. Step 5: Solve for x
   x = 879,034.83/1,084.63
6. Step 6: Final answer
   x = 810.45