Finding the Fourth Proportional to 1,429.71, 1,973.08 and 800.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.71 : 1,973.08 = 800.20 : x
2. Step 2: Convert to fraction form
   1,429.71/1,973.08 = 800.20/x
3. Step 3: Cross multiply
   1,429.71x = 1,973.08 × 800.20
4. Step 4: Simplify right side
   1,429.71x = 1,578,854.62
5. Step 5: Solve for x
   x = 1,578,854.62/1,429.71
6. Step 6: Final answer
   x = 1,104.32