Finding the Fourth Proportional to 2,931.96, 4,047.72 and 2,254.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,931.96 : 4,047.72 = 2,254.32 : x
2. Step 2: Convert to fraction form
   2,931.96/4,047.72 = 2,254.32/x
3. Step 3: Cross multiply
   2,931.96x = 4,047.72 × 2,254.32
4. Step 4: Simplify right side
   2,931.96x = 9,124,856.15
5. Step 5: Solve for x
   x = 9,124,856.15/2,931.96
6. Step 6: Final answer
   x = 3,112.20