Finding the Fourth Proportional to 2,223.17, 3,337.05 and 1,638.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.17 : 3,337.05 = 1,638.82 : x
2. Step 2: Convert to fraction form
   2,223.17/3,337.05 = 1,638.82/x
3. Step 3: Cross multiply
   2,223.17x = 3,337.05 × 1,638.82
4. Step 4: Simplify right side
   2,223.17x = 5,468,824.28
5. Step 5: Solve for x
   x = 5,468,824.28/2,223.17
6. Step 6: Final answer
   x = 2,459.92