Finding the Fourth Proportional to 2,245.96, 3,369.39 and 947.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.96 : 3,369.39 = 947.42 : x
2. Step 2: Convert to fraction form
   2,245.96/3,369.39 = 947.42/x
3. Step 3: Cross multiply
   2,245.96x = 3,369.39 × 947.42
4. Step 4: Simplify right side
   2,245.96x = 3,192,222.74
5. Step 5: Solve for x
   x = 3,192,222.74/2,245.96
6. Step 6: Final answer
   x = 1,421.32