Finding the Fourth Proportional to 2,245.72, 3,369.10 and 947.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.72 : 3,369.10 = 947.24 : x
2. Step 2: Convert to fraction form
   2,245.72/3,369.10 = 947.24/x
3. Step 3: Cross multiply
   2,245.72x = 3,369.10 × 947.24
4. Step 4: Simplify right side
   2,245.72x = 3,191,346.28
5. Step 5: Solve for x
   x = 3,191,346.28/2,245.72
6. Step 6: Final answer
   x = 1,421.08