Finding the Fourth Proportional to 2,218.42, 3,061.72 and 1,274.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218.42 : 3,061.72 = 1,274.50 : x
2. Step 2: Convert to fraction form
   2,218.42/3,061.72 = 1,274.50/x
3. Step 3: Cross multiply
   2,218.42x = 3,061.72 × 1,274.50
4. Step 4: Simplify right side
   2,218.42x = 3,902,162.14
5. Step 5: Solve for x
   x = 3,902,162.14/2,218.42
6. Step 6: Final answer
   x = 1,758.98