Finding the Fourth Proportional to 1,429.18, 1,971.98 and 808.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.18 : 1,971.98 = 808.06 : x
2. Step 2: Convert to fraction form
   1,429.18/1,971.98 = 808.06/x
3. Step 3: Cross multiply
   1,429.18x = 1,971.98 × 808.06
4. Step 4: Simplify right side
   1,429.18x = 1,593,478.16
5. Step 5: Solve for x
   x = 1,593,478.16/1,429.18
6. Step 6: Final answer
   x = 1,114.96