Finding the Fourth Proportional to 1,128.52, 1,692.83 and 348.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128.52 : 1,692.83 = 348.54 : x
2. Step 2: Convert to fraction form
   1,128.52/1,692.83 = 348.54/x
3. Step 3: Cross multiply
   1,128.52x = 1,692.83 × 348.54
4. Step 4: Simplify right side
   1,128.52x = 590,013.49
5. Step 5: Solve for x
   x = 590,013.49/1,128.52
6. Step 6: Final answer
   x = 522.82