Finding the Fourth Proportional to 1,429.67, 2,143.18 and 504.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.67 : 2,143.18 = 504.72 : x
2. Step 2: Convert to fraction form
   1,429.67/2,143.18 = 504.72/x
3. Step 3: Cross multiply
   1,429.67x = 2,143.18 × 504.72
4. Step 4: Simplify right side
   1,429.67x = 1,081,705.81
5. Step 5: Solve for x
   x = 1,081,705.81/1,429.67
6. Step 6: Final answer
   x = 756.61