Finding the Fourth Proportional to 1,200.98, 1,800.54 and 552.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.98 : 1,800.54 = 552.17 : x
2. Step 2: Convert to fraction form
   1,200.98/1,800.54 = 552.17/x
3. Step 3: Cross multiply
   1,200.98x = 1,800.54 × 552.17
4. Step 4: Simplify right side
   1,200.98x = 994,208.67
5. Step 5: Solve for x
   x = 994,208.67/1,200.98
6. Step 6: Final answer
   x = 827.83