Finding the Fourth Proportional to 2,429.72, 3,347.16 and 1,932.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.72 : 3,347.16 = 1,932.20 : x
2. Step 2: Convert to fraction form
   2,429.72/3,347.16 = 1,932.20/x
3. Step 3: Cross multiply
   2,429.72x = 3,347.16 × 1,932.20
4. Step 4: Simplify right side
   2,429.72x = 6,467,382.55
5. Step 5: Solve for x
   x = 6,467,382.55/2,429.72
6. Step 6: Final answer
   x = 2,661.78