Finding the Fourth Proportional to 1,103.34, 1,654.20 and 525.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.34 : 1,654.20 = 525.54 : x
2. Step 2: Convert to fraction form
   1,103.34/1,654.20 = 525.54/x
3. Step 3: Cross multiply
   1,103.34x = 1,654.20 × 525.54
4. Step 4: Simplify right side
   1,103.34x = 869,348.27
5. Step 5: Solve for x
   x = 869,348.27/1,103.34
6. Step 6: Final answer
   x = 787.92