Finding the Fourth Proportional to 1,086.95, 1,630.94 and 539.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.95 : 1,630.94 = 539.00 : x
2. Step 2: Convert to fraction form
   1,086.95/1,630.94 = 539.00/x
3. Step 3: Cross multiply
   1,086.95x = 1,630.94 × 539.00
4. Step 4: Simplify right side
   1,086.95x = 879,081.10
5. Step 5: Solve for x
   x = 879,081.10/1,086.95
6. Step 6: Final answer
   x = 808.76