Finding the Fourth Proportional to 1,629.81, 2,434.79 and 1,040.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,629.81 : 2,434.79 = 1,040.12 : x
2. Step 2: Convert to fraction form
   1,629.81/2,434.79 = 1,040.12/x
3. Step 3: Cross multiply
   1,629.81x = 2,434.79 × 1,040.12
4. Step 4: Simplify right side
   1,629.81x = 2,532,456.40
5. Step 5: Solve for x
   x = 2,532,456.40/1,629.81
6. Step 6: Final answer
   x = 1,553.84