Finding the Fourth Proportional to 2,218.39, 3,061.35 and 1,274.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.39 : 3,061.35 = 1,274.17 : x
2. Step 2: Convert to fraction form
   2,218.39/3,061.35 = 1,274.17/x
3. Step 3: Cross multiply
   2,218.39x = 3,061.35 × 1,274.17
4. Step 4: Simplify right side
   2,218.39x = 3,900,680.33
5. Step 5: Solve for x
   x = 3,900,680.33/2,218.39
6. Step 6: Final answer
   x = 1,758.34