Finding the Fourth Proportional to 1,083.57, 1,495.34 and 617.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.57 : 1,495.34 = 617.82 : x
2. Step 2: Convert to fraction form
   1,083.57/1,495.34 = 617.82/x
3. Step 3: Cross multiply
   1,083.57x = 1,495.34 × 617.82
4. Step 4: Simplify right side
   1,083.57x = 923,847.87
5. Step 5: Solve for x
   x = 923,847.87/1,083.57
6. Step 6: Final answer
   x = 852.60