Finding the Fourth Proportional to 1,079.94, 1,618.55 and 586.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.94 : 1,618.55 = 586.34 : x
2. Step 2: Convert to fraction form
   1,079.94/1,618.55 = 586.34/x
3. Step 3: Cross multiply
   1,079.94x = 1,618.55 × 586.34
4. Step 4: Simplify right side
   1,079.94x = 949,020.61
5. Step 5: Solve for x
   x = 949,020.61/1,079.94
6. Step 6: Final answer
   x = 878.77