Finding the Fourth Proportional to 2,218.27, 3,061.28 and 1,274.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.27 : 3,061.28 = 1,274.23 : x
2. Step 2: Convert to fraction form
   2,218.27/3,061.28 = 1,274.23/x
3. Step 3: Cross multiply
   2,218.27x = 3,061.28 × 1,274.23
4. Step 4: Simplify right side
   2,218.27x = 3,900,774.81
5. Step 5: Solve for x
   x = 3,900,774.81/2,218.27
6. Step 6: Final answer
   x = 1,758.48