Finding the Fourth Proportional to 1,168.98, 1,752.12 and 621.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.98 : 1,752.12 = 621.42 : x
2. Step 2: Convert to fraction form
   1,168.98/1,752.12 = 621.42/x
3. Step 3: Cross multiply
   1,168.98x = 1,752.12 × 621.42
4. Step 4: Simplify right side
   1,168.98x = 1,088,802.41
5. Step 5: Solve for x
   x = 1,088,802.41/1,168.98
6. Step 6: Final answer
   x = 931.41