Finding the Fourth Proportional to 1,059.51, 1,461.81 and 617.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.51 : 1,461.81 = 617.32 : x
2. Step 2: Convert to fraction form
   1,059.51/1,461.81 = 617.32/x
3. Step 3: Cross multiply
   1,059.51x = 1,461.81 × 617.32
4. Step 4: Simplify right side
   1,059.51x = 902,404.55
5. Step 5: Solve for x
   x = 902,404.55/1,059.51
6. Step 6: Final answer
   x = 851.72