Finding the Fourth Proportional to 2,473.40, 3,706.80 and 911.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,473.40 : 3,706.80 = 911.96 : x
2. Step 2: Convert to fraction form
   2,473.40/3,706.80 = 911.96/x
3. Step 3: Cross multiply
   2,473.40x = 3,706.80 × 911.96
4. Step 4: Simplify right side
   2,473.40x = 3,380,453.33
5. Step 5: Solve for x
   x = 3,380,453.33/2,473.40
6. Step 6: Final answer
   x = 1,366.72