Finding the Fourth Proportional to 1,857.84, 2,783.52 and 1,812.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,857.84 : 2,783.52 = 1,812.48 : x
2. Step 2: Convert to fraction form
   1,857.84/2,783.52 = 1,812.48/x
3. Step 3: Cross multiply
   1,857.84x = 2,783.52 × 1,812.48
4. Step 4: Simplify right side
   1,857.84x = 5,045,074.33
5. Step 5: Solve for x
   x = 5,045,074.33/1,857.84
6. Step 6: Final answer
   x = 2,715.56