Finding the Fourth Proportional to 2,218.66, 3,328.71 and 1,064.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.66 : 3,328.71 = 1,064.50 : x
2. Step 2: Convert to fraction form
   2,218.66/3,328.71 = 1,064.50/x
3. Step 3: Cross multiply
   2,218.66x = 3,328.71 × 1,064.50
4. Step 4: Simplify right side
   2,218.66x = 3,543,411.80
5. Step 5: Solve for x
   x = 3,543,411.80/2,218.66
6. Step 6: Final answer
   x = 1,597.10