Finding the Fourth Proportional to 1,168.79, 1,753.49 and 620.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.79 : 1,753.49 = 620.82 : x
2. Step 2: Convert to fraction form
   1,168.79/1,753.49 = 620.82/x
3. Step 3: Cross multiply
   1,168.79x = 1,753.49 × 620.82
4. Step 4: Simplify right side
   1,168.79x = 1,088,603.21
5. Step 5: Solve for x
   x = 1,088,603.21/1,168.79
6. Step 6: Final answer
   x = 931.40