Finding the Fourth Proportional to 2,378.31, 3,568.28 and 1,223.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,378.31 : 3,568.28 = 1,223.25 : x
2. Step 2: Convert to fraction form
   2,378.31/3,568.28 = 1,223.25/x
3. Step 3: Cross multiply
   2,378.31x = 3,568.28 × 1,223.25
4. Step 4: Simplify right side
   2,378.31x = 4,364,892.39
5. Step 5: Solve for x
   x = 4,364,892.39/2,378.31
6. Step 6: Final answer
   x = 1,835.29