Finding the Fourth Proportional to 2,645.98, 3,969.23 and 914.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645.98 : 3,969.23 = 914.38 : x
2. Step 2: Convert to fraction form
   2,645.98/3,969.23 = 914.38/x
3. Step 3: Cross multiply
   2,645.98x = 3,969.23 × 914.38
4. Step 4: Simplify right side
   2,645.98x = 3,629,384.53
5. Step 5: Solve for x
   x = 3,629,384.53/2,645.98
6. Step 6: Final answer
   x = 1,371.66