Finding the Fourth Proportional to 2,938.72, 4,056.96 and 2,274.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,938.72 : 4,056.96 = 2,274.08 : x
2. Step 2: Convert to fraction form
   2,938.72/4,056.96 = 2,274.08/x
3. Step 3: Cross multiply
   2,938.72x = 4,056.96 × 2,274.08
4. Step 4: Simplify right side
   2,938.72x = 9,225,851.60
5. Step 5: Solve for x
   x = 9,225,851.60/2,938.72
6. Step 6: Final answer
   x = 3,139.41