Finding the Fourth Proportional to 2,974.24, 4,465.72 and 2,921.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,974.24 : 4,465.72 = 2,921.74 : x
2. Step 2: Convert to fraction form
   2,974.24/4,465.72 = 2,921.74/x
3. Step 3: Cross multiply
   2,974.24x = 4,465.72 × 2,921.74
4. Step 4: Simplify right side
   2,974.24x = 13,047,672.75
5. Step 5: Solve for x
   x = 13,047,672.75/2,974.24
6. Step 6: Final answer
   x = 4,386.89