Finding the Fourth Proportional to 1,168.85, 1,754.06 and 621.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.85 : 1,754.06 = 621.43 : x
2. Step 2: Convert to fraction form
   1,168.85/1,754.06 = 621.43/x
3. Step 3: Cross multiply
   1,168.85x = 1,754.06 × 621.43
4. Step 4: Simplify right side
   1,168.85x = 1,090,018.01
5. Step 5: Solve for x
   x = 1,090,018.01/1,168.85
6. Step 6: Final answer
   x = 932.55