Finding the Fourth Proportional to 2,296.23, 3,168.78 and 1,248.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,296.23 : 3,168.78 = 1,248.30 : x
2. Step 2: Convert to fraction form
   2,296.23/3,168.78 = 1,248.30/x
3. Step 3: Cross multiply
   2,296.23x = 3,168.78 × 1,248.30
4. Step 4: Simplify right side
   2,296.23x = 3,955,588.07
5. Step 5: Solve for x
   x = 3,955,588.07/2,296.23
6. Step 6: Final answer
   x = 1,722.64