Finding the Fourth Proportional to 2,298.05, 3,447.09 and 911.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.05 : 3,447.09 = 911.72 : x
2. Step 2: Convert to fraction form
   2,298.05/3,447.09 = 911.72/x
3. Step 3: Cross multiply
   2,298.05x = 3,447.09 × 911.72
4. Step 4: Simplify right side
   2,298.05x = 3,142,763.66
5. Step 5: Solve for x
   x = 3,142,763.66/2,298.05
6. Step 6: Final answer
   x = 1,367.58