Finding the Fourth Proportional to 2,918.88, 4,375.72 and 1,274.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,918.88 : 4,375.72 = 1,274.16 : x
2. Step 2: Convert to fraction form
   2,918.88/4,375.72 = 1,274.16/x
3. Step 3: Cross multiply
   2,918.88x = 4,375.72 × 1,274.16
4. Step 4: Simplify right side
   2,918.88x = 5,575,367.40
5. Step 5: Solve for x
   x = 5,575,367.40/2,918.88
6. Step 6: Final answer
   x = 1,910.11