Finding the Fourth Proportional to 1,141.82, 1,575.72 and 617.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.82 : 1,575.72 = 617.86 : x
2. Step 2: Convert to fraction form
   1,141.82/1,575.72 = 617.86/x
3. Step 3: Cross multiply
   1,141.82x = 1,575.72 × 617.86
4. Step 4: Simplify right side
   1,141.82x = 973,563.39
5. Step 5: Solve for x
   x = 973,563.39/1,141.82
6. Step 6: Final answer
   x = 852.65