Finding the Fourth Proportional to 1,294.83, 1,943.61 and 808.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,294.83 : 1,943.61 = 808.22 : x
2. Step 2: Convert to fraction form
   1,294.83/1,943.61 = 808.22/x
3. Step 3: Cross multiply
   1,294.83x = 1,943.61 × 808.22
4. Step 4: Simplify right side
   1,294.83x = 1,570,864.47
5. Step 5: Solve for x
   x = 1,570,864.47/1,294.83
6. Step 6: Final answer
   x = 1,213.18