Finding the Fourth Proportional to 1,429.50, 1,973.07 and 808.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.50 : 1,973.07 = 808.86 : x
2. Step 2: Convert to fraction form
   1,429.50/1,973.07 = 808.86/x
3. Step 3: Cross multiply
   1,429.50x = 1,973.07 × 808.86
4. Step 4: Simplify right side
   1,429.50x = 1,595,937.40
5. Step 5: Solve for x
   x = 1,595,937.40/1,429.50
6. Step 6: Final answer
   x = 1,116.43