Finding the Fourth Proportional to 1,479.89, 2,042.24 and 816.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,479.89 : 2,042.24 = 816.75 : x
2. Step 2: Convert to fraction form
   1,479.89/2,042.24 = 816.75/x
3. Step 3: Cross multiply
   1,479.89x = 2,042.24 × 816.75
4. Step 4: Simplify right side
   1,479.89x = 1,667,999.52
5. Step 5: Solve for x
   x = 1,667,999.52/1,479.89
6. Step 6: Final answer
   x = 1,127.11