Finding the Fourth Proportional to 2,300.25, 3,447.99 and 912.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.25 : 3,447.99 = 912.99 : x
2. Step 2: Convert to fraction form
   2,300.25/3,447.99 = 912.99/x
3. Step 3: Cross multiply
   2,300.25x = 3,447.99 × 912.99
4. Step 4: Simplify right side
   2,300.25x = 3,147,980.39
5. Step 5: Solve for x
   x = 3,147,980.39/2,300.25
6. Step 6: Final answer
   x = 1,368.54