Finding the Fourth Proportional to 1,116.52, 1,672.32 and 629.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.52 : 1,672.32 = 629.28 : x
2. Step 2: Convert to fraction form
   1,116.52/1,672.32 = 629.28/x
3. Step 3: Cross multiply
   1,116.52x = 1,672.32 × 629.28
4. Step 4: Simplify right side
   1,116.52x = 1,052,357.53
5. Step 5: Solve for x
   x = 1,052,357.53/1,116.52
6. Step 6: Final answer
   x = 942.53