Finding the Fourth Proportional to 1,922.72, 2,886.24 and 1,274.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,922.72 : 2,886.24 = 1,274.72 : x
2. Step 2: Convert to fraction form
   1,922.72/2,886.24 = 1,274.72/x
3. Step 3: Cross multiply
   1,922.72x = 2,886.24 × 1,274.72
4. Step 4: Simplify right side
   1,922.72x = 3,679,147.85
5. Step 5: Solve for x
   x = 3,679,147.85/1,922.72
6. Step 6: Final answer
   x = 1,913.51