Finding the Fourth Proportional to 1,384.47, 2,076.69 and 800.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.47 : 2,076.69 = 800.35 : x
2. Step 2: Convert to fraction form
   1,384.47/2,076.69 = 800.35/x
3. Step 3: Cross multiply
   1,384.47x = 2,076.69 × 800.35
4. Step 4: Simplify right side
   1,384.47x = 1,662,078.84
5. Step 5: Solve for x
   x = 1,662,078.84/1,384.47
6. Step 6: Final answer
   x = 1,200.52