Finding the Fourth Proportional to 2,043.12, 3,066.70 and 947.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,043.12 : 3,066.70 = 947.72 : x
2. Step 2: Convert to fraction form
   2,043.12/3,066.70 = 947.72/x
3. Step 3: Cross multiply
   2,043.12x = 3,066.70 × 947.72
4. Step 4: Simplify right side
   2,043.12x = 2,906,372.92
5. Step 5: Solve for x
   x = 2,906,372.92/2,043.12
6. Step 6: Final answer
   x = 1,422.52