Finding the Fourth Proportional to 1,059.69, 1,461.58 and 617.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.69 : 1,461.58 = 617.56 : x
2. Step 2: Convert to fraction form
   1,059.69/1,461.58 = 617.56/x
3. Step 3: Cross multiply
   1,059.69x = 1,461.58 × 617.56
4. Step 4: Simplify right side
   1,059.69x = 902,613.34
5. Step 5: Solve for x
   x = 902,613.34/1,059.69
6. Step 6: Final answer
   x = 851.77