Finding the Fourth Proportional to 1,365.63, 2,047.83 and 543.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365.63 : 2,047.83 = 543.69 : x
2. Step 2: Convert to fraction form
   1,365.63/2,047.83 = 543.69/x
3. Step 3: Cross multiply
   1,365.63x = 2,047.83 × 543.69
4. Step 4: Simplify right side
   1,365.63x = 1,113,384.69
5. Step 5: Solve for x
   x = 1,113,384.69/1,365.63
6. Step 6: Final answer
   x = 815.29