Finding the Fourth Proportional to 1,429.81, 2,143.63 and 736.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.81 : 2,143.63 = 736.18 : x
2. Step 2: Convert to fraction form
   1,429.81/2,143.63 = 736.18/x
3. Step 3: Cross multiply
   1,429.81x = 2,143.63 × 736.18
4. Step 4: Simplify right side
   1,429.81x = 1,578,097.53
5. Step 5: Solve for x
   x = 1,578,097.53/1,429.81
6. Step 6: Final answer
   x = 1,103.71