Finding the Fourth Proportional to 2,952.76, 4,429.12 and 1,221.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,952.76 : 4,429.12 = 1,221.42 : x
2. Step 2: Convert to fraction form
   2,952.76/4,429.12 = 1,221.42/x
3. Step 3: Cross multiply
   2,952.76x = 4,429.12 × 1,221.42
4. Step 4: Simplify right side
   2,952.76x = 5,409,815.75
5. Step 5: Solve for x
   x = 5,409,815.75/2,952.76
6. Step 6: Final answer
   x = 1,832.12