Finding the Fourth Proportional to 2,199.82, 3,299.72 and 556.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,199.82 : 3,299.72 = 556.50 : x
2. Step 2: Convert to fraction form
   2,199.82/3,299.72 = 556.50/x
3. Step 3: Cross multiply
   2,199.82x = 3,299.72 × 556.50
4. Step 4: Simplify right side
   2,199.82x = 1,836,294.18
5. Step 5: Solve for x
   x = 1,836,294.18/2,199.82
6. Step 6: Final answer
   x = 834.75