Finding the Fourth Proportional to 2,218.03, 3,061.03 and 1,286.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.03 : 3,061.03 = 1,286.53 : x
2. Step 2: Convert to fraction form
   2,218.03/3,061.03 = 1,286.53/x
3. Step 3: Cross multiply
   2,218.03x = 3,061.03 × 1,286.53
4. Step 4: Simplify right side
   2,218.03x = 3,938,090.32
5. Step 5: Solve for x
   x = 3,938,090.32/2,218.03
6. Step 6: Final answer
   x = 1,775.49