Finding the Fourth Proportional to 1,429.71, 1,973.86 and 933.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.71 : 1,973.86 = 933.21 : x
2. Step 2: Convert to fraction form
   1,429.71/1,973.86 = 933.21/x
3. Step 3: Cross multiply
   1,429.71x = 1,973.86 × 933.21
4. Step 4: Simplify right side
   1,429.71x = 1,842,025.89
5. Step 5: Solve for x
   x = 1,842,025.89/1,429.71
6. Step 6: Final answer
   x = 1,288.39