Finding the Fourth Proportional to 1,365.89, 2,048.82 and 392.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365.89 : 2,048.82 = 392.00 : x
2. Step 2: Convert to fraction form
   1,365.89/2,048.82 = 392.00/x
3. Step 3: Cross multiply
   1,365.89x = 2,048.82 × 392.00
4. Step 4: Simplify right side
   1,365.89x = 803,127.20
5. Step 5: Solve for x
   x = 803,127.20/1,365.89
6. Step 6: Final answer
   x = 587.99