Finding the Fourth Proportional to 1,120.81, 1,679.58 and 632.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120.81 : 1,679.58 = 632.82 : x
2. Step 2: Convert to fraction form
   1,120.81/1,679.58 = 632.82/x
3. Step 3: Cross multiply
   1,120.81x = 1,679.58 × 632.82
4. Step 4: Simplify right side
   1,120.81x = 1,062,871.82
5. Step 5: Solve for x
   x = 1,062,871.82/1,120.81
6. Step 6: Final answer
   x = 948.31