Finding the Fourth Proportional to 1,059.94, 1,588.78 and 540.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.94 : 1,588.78 = 540.32 : x
2. Step 2: Convert to fraction form
   1,059.94/1,588.78 = 540.32/x
3. Step 3: Cross multiply
   1,059.94x = 1,588.78 × 540.32
4. Step 4: Simplify right side
   1,059.94x = 858,449.61
5. Step 5: Solve for x
   x = 858,449.61/1,059.94
6. Step 6: Final answer
   x = 809.90