Finding the Fourth Proportional to 1,069.34, 1,602.77 and 581.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.34 : 1,602.77 = 581.54 : x
2. Step 2: Convert to fraction form
   1,069.34/1,602.77 = 581.54/x
3. Step 3: Cross multiply
   1,069.34x = 1,602.77 × 581.54
4. Step 4: Simplify right side
   1,069.34x = 932,063.94
5. Step 5: Solve for x
   x = 932,063.94/1,069.34
6. Step 6: Final answer
   x = 871.63