Finding the Fourth Proportional to 2,218.36, 3,061.48 and 1,274.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.36 : 3,061.48 = 1,274.45 : x
2. Step 2: Convert to fraction form
   2,218.36/3,061.48 = 1,274.45/x
3. Step 3: Cross multiply
   2,218.36x = 3,061.48 × 1,274.45
4. Step 4: Simplify right side
   2,218.36x = 3,901,696.81
5. Step 5: Solve for x
   x = 3,901,696.81/2,218.36
6. Step 6: Final answer
   x = 1,758.82