Finding the Fourth Proportional to 1,059.56, 1,462.18 and 587.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.56 : 1,462.18 = 587.45 : x
2. Step 2: Convert to fraction form
   1,059.56/1,462.18 = 587.45/x
3. Step 3: Cross multiply
   1,059.56x = 1,462.18 × 587.45
4. Step 4: Simplify right side
   1,059.56x = 858,959.28
5. Step 5: Solve for x
   x = 858,959.28/1,059.56
6. Step 6: Final answer
   x = 810.68