Finding the Fourth Proportional to 1,103.54, 1,654.56 and 517.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.54 : 1,654.56 = 517.94 : x
2. Step 2: Convert to fraction form
   1,103.54/1,654.56 = 517.94/x
3. Step 3: Cross multiply
   1,103.54x = 1,654.56 × 517.94
4. Step 4: Simplify right side
   1,103.54x = 856,962.81
5. Step 5: Solve for x
   x = 856,962.81/1,103.54
6. Step 6: Final answer
   x = 776.56