Finding the Fourth Proportional to 1,059.17, 1,461.59 and 587.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.17 : 1,461.59 = 587.05 : x
2. Step 2: Convert to fraction form
   1,059.17/1,461.59 = 587.05/x
3. Step 3: Cross multiply
   1,059.17x = 1,461.59 × 587.05
4. Step 4: Simplify right side
   1,059.17x = 858,026.41
5. Step 5: Solve for x
   x = 858,026.41/1,059.17
6. Step 6: Final answer
   x = 810.09