Finding the Fourth Proportional to 1,141.89, 1,575.81 and 617.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.89 : 1,575.81 = 617.92 : x
2. Step 2: Convert to fraction form
   1,141.89/1,575.81 = 617.92/x
3. Step 3: Cross multiply
   1,141.89x = 1,575.81 × 617.92
4. Step 4: Simplify right side
   1,141.89x = 973,724.52
5. Step 5: Solve for x
   x = 973,724.52/1,141.89
6. Step 6: Final answer
   x = 852.73