Finding the Fourth Proportional to 1,059.85, 1,462.56 and 617.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.85 : 1,462.56 = 617.89 : x
2. Step 2: Convert to fraction form
   1,059.85/1,462.56 = 617.89/x
3. Step 3: Cross multiply
   1,059.85x = 1,462.56 × 617.89
4. Step 4: Simplify right side
   1,059.85x = 903,701.20
5. Step 5: Solve for x
   x = 903,701.20/1,059.85
6. Step 6: Final answer
   x = 852.67