Finding the Fourth Proportional to 1,223.98, 1,824.30 and 1,154.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.98 : 1,824.30 = 1,154.79 : x
2. Step 2: Convert to fraction form
   1,223.98/1,824.30 = 1,154.79/x
3. Step 3: Cross multiply
   1,223.98x = 1,824.30 × 1,154.79
4. Step 4: Simplify right side
   1,223.98x = 2,106,683.40
5. Step 5: Solve for x
   x = 2,106,683.40/1,223.98
6. Step 6: Final answer
   x = 1,721.18