Finding the Fourth Proportional to 1,384.47, 2,077.56 and 800.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.47 : 2,077.56 = 800.63 : x
2. Step 2: Convert to fraction form
   1,384.47/2,077.56 = 800.63/x
3. Step 3: Cross multiply
   1,384.47x = 2,077.56 × 800.63
4. Step 4: Simplify right side
   1,384.47x = 1,663,346.48
5. Step 5: Solve for x
   x = 1,663,346.48/1,384.47
6. Step 6: Final answer
   x = 1,201.43