Finding the Fourth Proportional to 1,429.76, 1,974.84 and 1,233.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.76 : 1,974.84 = 1,233.20 : x
2. Step 2: Convert to fraction form
   1,429.76/1,974.84 = 1,233.20/x
3. Step 3: Cross multiply
   1,429.76x = 1,974.84 × 1,233.20
4. Step 4: Simplify right side
   1,429.76x = 2,435,372.69
5. Step 5: Solve for x
   x = 2,435,372.69/1,429.76
6. Step 6: Final answer
   x = 1,703.34