Finding the Fourth Proportional to 1,812.53, 2,714.89 and 1,224.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,812.53 : 2,714.89 = 1,224.30 : x
2. Step 2: Convert to fraction form
   1,812.53/2,714.89 = 1,224.30/x
3. Step 3: Cross multiply
   1,812.53x = 2,714.89 × 1,224.30
4. Step 4: Simplify right side
   1,812.53x = 3,323,839.83
5. Step 5: Solve for x
   x = 3,323,839.83/1,812.53
6. Step 6: Final answer
   x = 1,833.81